15053572249 has 3 divisors (see below), whose sum is σ = 15053694943. Its totient is φ = 15053449556.

The previous prime is 15053572241. The next prime is 15053572273. The reversal of 15053572249 is 94227535051.

It is a happy number.

The square root of 15053572249 is 122693.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 88454025 + 14965118224 = 9405^2 + 122332^2 .

It is not a de Polignac number, because 15053572249 - 2³ = 15053572241 is a prime.

It is a super-2 number, since 2×15053572249² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15053572241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 61347 + ... + 184039.

Almost surely, 2^15053572249 is an apocalyptic number.

15053572249 is the 122693-rd square number.

15053572249 is the 61347-th centered octagonal number.

It is an amenable number.

15053572249 is a deficient number, since it is larger than the sum of its proper divisors (122694).

15053572249 is an frugal number, since it uses more digits than its factorization.

15053572249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245386 (or 122693 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 43.

It can be divided in two parts, 150535 and 72249, that added together give a square (222784 = 472²).

The spelling of 15053572249 in words is "fifteen billion, fifty-three million, five hundred seventy-two thousand, two hundred forty-nine".