15242235455 has 4 divisors (see below), whose sum is σ = 18290682552. Its totient is φ = 12193788360.

The previous prime is 15242235451. The next prime is 15242235467. The reversal of 15242235455 is 55453224251.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 15242235455 - 2² = 15242235451 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 (15242235451) 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, 1524223541 + ... + 1524223550.

It is an arithmetic number, because the mean of its divisors is an integer number (4572670638).

Almost surely, 2^15242235455 is an apocalyptic number.

15242235455 is a deficient number, since it is larger than the sum of its proper divisors (3048447097).

15242235455 is an equidigital number, since it uses as much as digits as its factorization.

15242235455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048447096.

The product of its digits is 240000, while the sum is 38.

The spelling of 15242235455 in words is "fifteen billion, two hundred forty-two million, two hundred thirty-five thousand, four hundred fifty-five".