55398837 has 8 divisors (see below), whose sum is σ = 79547104. Its totient is φ = 34091568.

The previous prime is 55398799. The next prime is 55398857. The reversal of 55398837 is 73889355.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55398837 - 2⁶ = 55398773 is a prime.

It is a super-2 number, since 2×55398837² = 6138062281905138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55398857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710203 + ... + 710280.

It is an arithmetic number, because the mean of its divisors is an integer number (9943388).

Almost surely, 2^55398837 is an apocalyptic number.

It is an amenable number.

55398837 is a deficient number, since it is larger than the sum of its proper divisors (24148267).

55398837 is a wasteful number, since it uses less digits than its factorization.

55398837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420499.

The product of its digits is 907200, while the sum is 48.

The square root of 55398837 is about 7443.0395000967. The cubic root of 55398837 is about 381.2122803496.

The spelling of 55398837 in words is "fifty-five million, three hundred ninety-eight thousand, eight hundred thirty-seven".