52439137 has 4 divisors (see below), whose sum is σ = 52920340. Its totient is φ = 51957936.

The previous prime is 52439131. The next prime is 52439143. The reversal of 52439137 is 73193425.

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

It is an interprime number because it is at equal distance from previous prime (52439131) and next prime (52439143).

It can be written as a sum of positive squares in 2 ways, for example, as 35988001 + 16451136 = 5999^2 + 4056^2 .

It is a cyclic number.

It is not a de Polignac number, because 52439137 - 2²³ = 44050529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52439131) 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, 240438 + ... + 240655.

It is an arithmetic number, because the mean of its divisors is an integer number (13230085).

Almost surely, 2^52439137 is an apocalyptic number.

It is an amenable number.

52439137 is a deficient number, since it is larger than the sum of its proper divisors (481203).

52439137 is a wasteful number, since it uses less digits than its factorization.

52439137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481202.

The product of its digits is 22680, while the sum is 34.

The square root of 52439137 is about 7241.4872091305. The cubic root of 52439137 is about 374.2988665078.

The spelling of 52439137 in words is "fifty-two million, four hundred thirty-nine thousand, one hundred thirty-seven".