52121157 has 8 divisors (see below), whose sum is σ = 75812640. Its totient is φ = 31588560.

The previous prime is 52121143. The next prime is 52121177. The reversal of 52121157 is 75112125.

52121157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 52121157 - 2⁴ = 52121141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52121177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 789682 + ... + 789747.

It is an arithmetic number, because the mean of its divisors is an integer number (9476580).

Almost surely, 2^52121157 is an apocalyptic number.

It is an amenable number.

52121157 is a deficient number, since it is larger than the sum of its proper divisors (23691483).

52121157 is a wasteful number, since it uses less digits than its factorization.

52121157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579443.

The product of its digits is 700, while the sum is 24.

The square root of 52121157 is about 7219.4983897775. The cubic root of 52121157 is about 373.5407753566.

The spelling of 52121157 in words is "fifty-two million, one hundred twenty-one thousand, one hundred fifty-seven".