52400237 has 4 divisors (see below), whose sum is σ = 52421436. Its totient is φ = 52379040.

The previous prime is 52400219. The next prime is 52400267. The reversal of 52400237 is 73200425.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18887716 + 33512521 = 4346^2 + 5789^2 .

It is a cyclic number.

It is not a de Polignac number, because 52400237 - 2⁸ = 52399981 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 (52400267) 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, 6314 + ... + 12027.

It is an arithmetic number, because the mean of its divisors is an integer number (13105359).

Almost surely, 2^52400237 is an apocalyptic number.

It is an amenable number.

52400237 is a deficient number, since it is larger than the sum of its proper divisors (21199).

52400237 is a wasteful number, since it uses less digits than its factorization.

52400237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21198.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 52400237 is about 7238.8007984748. The cubic root of 52400237 is about 374.2062904374.

The spelling of 52400237 in words is "fifty-two million, four hundred thousand, two hundred thirty-seven".