52151213 has 4 divisors (see below), whose sum is σ = 52424448. Its totient is φ = 51877980.

The previous prime is 52151201. The next prime is 52151233. The reversal of 52151213 is 31215125.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52151213 - 2⁶ = 52151149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52151233) 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, 136331 + ... + 136712.

It is an arithmetic number, because the mean of its divisors is an integer number (13106112).

Almost surely, 2^52151213 is an apocalyptic number.

It is an amenable number.

52151213 is a deficient number, since it is larger than the sum of its proper divisors (273235).

52151213 is a wasteful number, since it uses less digits than its factorization.

52151213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273234.

The product of its digits is 300, while the sum is 20.

The square root of 52151213 is about 7221.5796748357. The cubic root of 52151213 is about 373.6125631219.

Adding to 52151213 its reverse (31215125), we get a palindrome (83366338).

The spelling of 52151213 in words is "fifty-two million, one hundred fifty-one thousand, two hundred thirteen".