55537899 has 8 divisors (see below), whose sum is σ = 74228112. Its totient is φ = 36936480.

The previous prime is 55537883. The next prime is 55537907. The reversal of 55537899 is 99873555.

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

It is not a de Polignac number, because 55537899 - 2⁴ = 55537883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55530899) 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, 20724 + ... + 23249.

It is an arithmetic number, because the mean of its divisors is an integer number (9278514).

Almost surely, 2^55537899 is an apocalyptic number.

55537899 is a deficient number, since it is larger than the sum of its proper divisors (18690213).

55537899 is a wasteful number, since it uses less digits than its factorization.

55537899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44397.

The product of its digits is 1701000, while the sum is 51.

The square root of 55537899 is about 7452.3753931213. The cubic root of 55537899 is about 381.5309864800.

The spelling of 55537899 in words is "fifty-five million, five hundred thirty-seven thousand, eight hundred ninety-nine".