55870237 has 2 divisors, whose sum is σ = 55870238. Its totient is φ = 55870236.

The previous prime is 55870231. The next prime is 55870253. The reversal of 55870237 is 73207855.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55517401 + 352836 = 7451^2 + 594^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55870237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55870196 and 55870205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55870231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27935118 + 27935119.

It is an arithmetic number, because the mean of its divisors is an integer number (27935119).

Almost surely, 2^55870237 is an apocalyptic number.

It is an amenable number.

55870237 is a deficient number, since it is larger than the sum of its proper divisors (1).

55870237 is an equidigital number, since it uses as much as digits as its factorization.

55870237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 55870237 is about 7474.6395899736. The cubic root of 55870237 is about 382.2904988556.

The spelling of 55870237 in words is "fifty-five million, eight hundred seventy thousand, two hundred thirty-seven".