52991553 has 8 divisors (see below), whose sum is σ = 70797888. Its totient is φ = 35256464.

The previous prime is 52991531. The next prime is 52991581. The reversal of 52991553 is 35519925.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52991553 - 2⁹ = 52991041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52991593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16050 + ... + 19067.

It is an arithmetic number, because the mean of its divisors is an integer number (8849736).

Almost surely, 2^52991553 is an apocalyptic number.

It is an amenable number.

52991553 is a deficient number, since it is larger than the sum of its proper divisors (17806335).

52991553 is a wasteful number, since it uses less digits than its factorization.

52991553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35623.

The product of its digits is 60750, while the sum is 39.

The square root of 52991553 is about 7279.5297238215. The cubic root of 52991553 is about 375.6086187985.

The spelling of 52991553 in words is "fifty-two million, nine hundred ninety-one thousand, five hundred fifty-three".