15130557 has 20 divisors (see below), whose sum is σ = 24342780. Its totient is φ = 9310464.

The previous prime is 15130553. The next prime is 15130559. The reversal of 15130557 is 75503151.

It can be written as a sum of positive squares in 2 ways, for example, as 5433561 + 9696996 = 2331^2 + 3114^2 .

It is not a de Polignac number, because 15130557 - 2² = 15130553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 15130557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15130553) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6132 + ... + 8237.

It is an arithmetic number, because the mean of its divisors is an integer number (1217139).

Almost surely, 2^15130557 is an apocalyptic number.

It is an amenable number.

15130557 is a deficient number, since it is larger than the sum of its proper divisors (9212223).

15130557 is a wasteful number, since it uses less digits than its factorization.

15130557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14394 (or 14385 counting only the distinct ones).

The product of its (nonzero) digits is 2625, while the sum is 27.

The square root of 15130557 is about 3889.8016658951. The cubic root of 15130557 is about 247.3346554049.

The spelling of 15130557 in words is "fifteen million, one hundred thirty thousand, five hundred fifty-seven".