15252452554 has 4 divisors (see below), whose sum is σ = 22878678834. Its totient is φ = 7626226276.

The previous prime is 15252452491. The next prime is 15252452561. The reversal of 15252452554 is 45525425251.

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

It can be written as a sum of positive squares in only one way, i.e., 9503325225 + 5749127329 = 97485^2 + 75823^2 .

It is a super-2 number, since 2×15252452554² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3813113137 + ... + 3813113140.

Almost surely, 2^15252452554 is an apocalyptic number.

15252452554 is a deficient number, since it is larger than the sum of its proper divisors (7626226280).

15252452554 is an equidigital number, since it uses as much as digits as its factorization.

15252452554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7626226279.

The product of its digits is 400000, while the sum is 40.

The spelling of 15252452554 in words is "fifteen billion, two hundred fifty-two million, four hundred fifty-two thousand, five hundred fifty-four".