55689037 has 2 divisors, whose sum is σ = 55689038. Its totient is φ = 55689036.

The previous prime is 55689013. The next prime is 55689041. The reversal of 55689037 is 73098655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55071241 + 617796 = 7421^2 + 786^2 .

It is a cyclic number.

It is not a de Polignac number, because 55689037 - 2⁷ = 55688909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55688984 and 55689002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55689047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27844518 + 27844519.

It is an arithmetic number, because the mean of its divisors is an integer number (27844519).

Almost surely, 2^55689037 is an apocalyptic number.

It is an amenable number.

55689037 is a deficient number, since it is larger than the sum of its proper divisors (1).

55689037 is an equidigital number, since it uses as much as digits as its factorization.

55689037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 55689037 is about 7462.5087604639. The cubic root of 55689037 is about 381.8767659832.

The spelling of 55689037 in words is "fifty-five million, six hundred eighty-nine thousand, thirty-seven".