15120552541 has 4 divisors (see below), whose sum is σ = 15270261084. Its totient is φ = 14970844000.

The previous prime is 15120552511. The next prime is 15120552547. The reversal of 15120552541 is 14525502151.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14857172100 + 263380441 = 121890^2 + 16229^2 .

It is a cyclic number.

It is not a de Polignac number, because 15120552541 - 2²¹ = 15118455389 is a prime.

It is a super-2 number, since 2×15120552541² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15120552547) 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, 74854120 + ... + 74854321.

It is an arithmetic number, because the mean of its divisors is an integer number (3817565271).

Almost surely, 2^15120552541 is an apocalyptic number.

It is an amenable number.

15120552541 is a deficient number, since it is larger than the sum of its proper divisors (149708543).

15120552541 is a wasteful number, since it uses less digits than its factorization.

15120552541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149708542.

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 15120552541 in words is "fifteen billion, one hundred twenty million, five hundred fifty-two thousand, five hundred forty-one".