15138057 has 8 divisors (see below), whose sum is σ = 22019040. Its totient is φ = 9174560.

The previous prime is 15138031. The next prime is 15138091. The reversal of 15138057 is 75083151.

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 15138057 - 2⁷ = 15137929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15138457) 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, 229332 + ... + 229397.

It is an arithmetic number, because the mean of its divisors is an integer number (2752380).

Almost surely, 2^15138057 is an apocalyptic number.

It is an amenable number.

15138057 is a deficient number, since it is larger than the sum of its proper divisors (6880983).

15138057 is a wasteful number, since it uses less digits than its factorization.

15138057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458743.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 15138057 is about 3890.7656058930. The cubic root of 15138057 is about 247.3755154010.

The spelling of 15138057 in words is "fifteen million, one hundred thirty-eight thousand, fifty-seven".