15242457 has 8 divisors (see below), whose sum is σ = 20503584. Its totient is φ = 10071488.

The previous prime is 15242453. The next prime is 15242459. The reversal of 15242457 is 75424251.

15242457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15242457 - 2² = 15242453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15242453) 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, 22143 + ... + 22820.

It is an arithmetic number, because the mean of its divisors is an integer number (2562948).

Almost surely, 2^15242457 is an apocalyptic number.

It is an amenable number.

15242457 is a deficient number, since it is larger than the sum of its proper divisors (5261127).

15242457 is a wasteful number, since it uses less digits than its factorization.

15242457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45079.

The product of its digits is 11200, while the sum is 30.

The square root of 15242457 is about 3904.1589363139. The cubic root of 15242457 is about 247.9428902923.

The spelling of 15242457 in words is "fifteen million, two hundred forty-two thousand, four hundred fifty-seven".