52490971 has 4 divisors (see below), whose sum is σ = 56528752. Its totient is φ = 48453192.

The previous prime is 52490959. The next prime is 52490981. The reversal of 52490971 is 17909425.

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

It is a cyclic number.

It is not a de Polignac number, because 52490971 - 2¹¹ = 52488923 is a prime.

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 52490971.

It is not an unprimeable number, because it can be changed into a prime (52490941) 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, 2018871 + ... + 2018896.

It is an arithmetic number, because the mean of its divisors is an integer number (14132188).

Almost surely, 2^52490971 is an apocalyptic number.

52490971 is a deficient number, since it is larger than the sum of its proper divisors (4037781).

52490971 is a wasteful number, since it uses less digits than its factorization.

52490971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037780.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 52490971 is about 7245.0652861103. The cubic root of 52490971 is about 374.4221524068.

The spelling of 52490971 in words is "fifty-two million, four hundred ninety thousand, nine hundred seventy-one".