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30250501 = 142921169
BaseRepresentation
bin111001101100…
…1011000000101
32002220212212221
41303121120011
530221004001
63000212341
7515060611
oct163313005
962825787
1030250501
1116091716
12a16a0b1
136362008
144036341
1529c81a1
hex1cd9605

30250501 has 4 divisors (see below), whose sum is σ = 30273100. Its totient is φ = 30227904.

The previous prime is 30250499. The next prime is 30250529. The reversal of 30250501 is 10505203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10505203 = 13975577.

It can be written as a sum of positive squares in 2 ways, for example, as 16597476 + 13653025 = 4074^2 + 3695^2 .

It is a cyclic number.

It is not a de Polignac number, because 30250501 - 21 = 30250499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30250541) 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, 9156 + ... + 12013.

It is an arithmetic number, because the mean of its divisors is an integer number (7568275).

Almost surely, 230250501 is an apocalyptic number.

It is an amenable number.

30250501 is a deficient number, since it is larger than the sum of its proper divisors (22599).

30250501 is a wasteful number, since it uses less digits than its factorization.

30250501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22598.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 30250501 is about 5500.0455452660. The cubic root of 30250501 is about 311.5857043586.

Adding to 30250501 its reverse (10505203), we get a palindrome (40755704).

The spelling of 30250501 in words is "thirty million, two hundred fifty thousand, five hundred one".

Divisors: 1 1429 21169 30250501