55398037 has 2 divisors, whose sum is σ = 55398038. Its totient is φ = 55398036.

The previous prime is 55397999. The next prime is 55398041. The reversal of 55398037 is 73089355.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28451556 + 26946481 = 5334^2 + 5191^2 .

It is a cyclic number.

It is not a de Polignac number, because 55398037 - 2²³ = 47009429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55398047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27699018 + 27699019.

It is an arithmetic number, because the mean of its divisors is an integer number (27699019).

Almost surely, 2^55398037 is an apocalyptic number.

It is an amenable number.

55398037 is a deficient number, since it is larger than the sum of its proper divisors (1).

55398037 is an equidigital number, since it uses as much as digits as its factorization.

55398037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 55398037 is about 7442.9857584171. The cubic root of 55398037 is about 381.2104453454.

The spelling of 55398037 in words is "fifty-five million, three hundred ninety-eight thousand, thirty-seven".