52661511 has 12 divisors (see below), whose sum is σ = 86933392. Its totient is φ = 30092256.

The previous prime is 52661509. The next prime is 52661561. The reversal of 52661511 is 11516625.

It is a happy number.

It is not a de Polignac number, because 52661511 - 2¹ = 52661509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52661561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 417886 + ... + 418011.

Almost surely, 2^52661511 is an apocalyptic number.

52661511 is a deficient number, since it is larger than the sum of its proper divisors (34271881).

52661511 is a wasteful number, since it uses less digits than its factorization.

52661511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835910 (or 835907 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 52661511 is about 7256.8251322462. The cubic root of 52661511 is about 374.8272057246.

The spelling of 52661511 in words is "fifty-two million, six hundred sixty-one thousand, five hundred eleven".