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630155041 = 2087301943
BaseRepresentation
bin100101100011110…
…110011100100001
31121220202012012121
4211203312130201
52242304430131
6142310224241
721421141465
oct4543663441
91556665177
10630155041
112a378489a
12157055081
13a0726309
145d9964a5
153a4c7911
hex258f6721

630155041 has 4 divisors (see below), whose sum is σ = 630459072. Its totient is φ = 629851012.

The previous prime is 630155039. The next prime is 630155047. The reversal of 630155041 is 140551036.

630155041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 630155041 - 21 = 630155039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 630154997 and 630155015.

It is not an unprimeable number, because it can be changed into a prime (630155047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148885 + ... + 153058.

It is an arithmetic number, because the mean of its divisors is an integer number (157614768).

Almost surely, 2630155041 is an apocalyptic number.

It is an amenable number.

630155041 is a deficient number, since it is larger than the sum of its proper divisors (304031).

630155041 is a wasteful number, since it uses less digits than its factorization.

630155041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304030.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 630155041 is about 25102.8890966757. The cubic root of 630155041 is about 857.3322056064.

It can be divided in two parts, 63015 and 5041, that multiplied together give a triangular number (317658615 = T25205).

The spelling of 630155041 in words is "six hundred thirty million, one hundred fifty-five thousand, forty-one".

Divisors: 1 2087 301943 630155041