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30125051 = 1119144139
BaseRepresentation
bin111001011101…
…0101111111011
32002200111210122
41302322233323
530203000201
62553403455
7514026065
oct162725773
962614718
1030125051
1116006440
12a10958b
136319b98
144002735
1529a0e1b
hex1cbabfb

30125051 has 8 divisors (see below), whose sum is σ = 34593600. Its totient is φ = 25944840.

The previous prime is 30125047. The next prime is 30125057. The reversal of 30125051 is 15052103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30125051 - 22 = 30125047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30125057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71861 + ... + 72278.

It is an arithmetic number, because the mean of its divisors is an integer number (4324200).

Almost surely, 230125051 is an apocalyptic number.

30125051 is a deficient number, since it is larger than the sum of its proper divisors (4468549).

30125051 is a wasteful number, since it uses less digits than its factorization.

30125051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144169.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 30125051 is about 5488.6292459958. The cubic root of 30125051 is about 311.1543882493.

Adding to 30125051 its reverse (15052103), we get a palindrome (45177154).

It can be divided in two parts, 301 and 25051, that added together give a palindrome (25352).

The spelling of 30125051 in words is "thirty million, one hundred twenty-five thousand, fifty-one".

Divisors: 1 11 19 209 144139 1585529 2738641 30125051