52178166451571 has 16 divisors (see below), whose sum is σ = 55374099897600. Its totient is φ = 49059646683168.

The previous prime is 52178166451517. The next prime is 52178166451603. The reversal of 52178166451571 is 17515466187125.

It is a cyclic number.

It is not a de Polignac number, because 52178166451571 - 2¹⁰ = 52178166450547 is a prime.

It is a super-2 number, since 2×52178166451571² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52178166451571.

It is not an unprimeable number, because it can be changed into a prime (52178166451501) 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, 15245225 + ... + 18351381.

It is an arithmetic number, because the mean of its divisors is an integer number (3460881243600).

Almost surely, 2^{52178166451571} is an apocalyptic number.

52178166451571 is a deficient number, since it is larger than the sum of its proper divisors (3195933446029).

52178166451571 is a wasteful number, since it uses less digits than its factorization.

52178166451571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3118618.

The product of its digits is 14112000, while the sum is 59.

The spelling of 52178166451571 in words is "fifty-two trillion, one hundred seventy-eight billion, one hundred sixty-six million, four hundred fifty-one thousand, five hundred seventy-one".