15512453401 has 9 divisors (see below), whose sum is σ = 15787311253. Its totient is φ = 15242306620.

The previous prime is 15512453387. The next prime is 15512453441. The reversal of 15512453401 is 10435421551.

The square root of 15512453401 is 124549.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 15512453401 - 2²⁷ = 15378235673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15512453441) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7347336 + ... + 7349446.

Almost surely, 2^15512453401 is an apocalyptic number.

15512453401 is the 124549-th square number.

15512453401 is the 62275-th centered octagonal number.

It is an amenable number.

15512453401 is a deficient number, since it is larger than the sum of its proper divisors (274857852).

15512453401 is an frugal number, since it uses more digits than its factorization.

15512453401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4340 (or 2170 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 15512453401 its reverse (10435421551), we get a palindrome (25947874952).

The spelling of 15512453401 in words is "fifteen billion, five hundred twelve million, four hundred fifty-three thousand, four hundred one".