52151021 has 16 divisors (see below), whose sum is σ = 58426368. Its totient is φ = 46224000.

The previous prime is 52151017. The next prime is 52151027. The reversal of 52151021 is 12015125.

It is a cyclic number.

It is not a de Polignac number, because 52151021 - 2² = 52151017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52151027) 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, 60425 + ... + 61281.

It is an arithmetic number, because the mean of its divisors is an integer number (3651648).

Almost surely, 2^52151021 is an apocalyptic number.

It is an amenable number.

52151021 is a deficient number, since it is larger than the sum of its proper divisors (6275347).

52151021 is a wasteful number, since it uses less digits than its factorization.

52151021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 52151021 is about 7221.5663813331. The cubic root of 52151021 is about 373.6121046238.

Adding to 52151021 its reverse (12015125), we get a palindrome (64166146).

The spelling of 52151021 in words is "fifty-two million, one hundred fifty-one thousand, twenty-one".