52015551 has 16 divisors (see below), whose sum is σ = 81819648. Its totient is φ = 28764000.

The previous prime is 52015549. The next prime is 52015553. The reversal of 52015551 is 15551025.

It is an interprime number because it is at equal distance from previous prime (52015549) and next prime (52015553).

It is not a de Polignac number, because 52015551 - 2¹ = 52015549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52015553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39300 + ... + 40601.

It is an arithmetic number, because the mean of its divisors is an integer number (5113728).

Almost surely, 2^52015551 is an apocalyptic number.

52015551 is a deficient number, since it is larger than the sum of its proper divisors (29804097).

52015551 is a wasteful number, since it uses less digits than its factorization.

52015551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79942.

The product of its (nonzero) digits is 1250, while the sum is 24.

The square root of 52015551 is about 7212.1807381679. The cubic root of 52015551 is about 373.2883198457.

Adding to 52015551 its reverse (15551025), we get a palindrome (67566576).

The spelling of 52015551 in words is "fifty-two million, fifteen thousand, five hundred fifty-one".