55487307 has 16 divisors (see below), whose sum is σ = 75985920. Its totient is φ = 35999232.

The previous prime is 55487297. The next prime is 55487347. The reversal of 55487307 is 70378455.

It is not a de Polignac number, because 55487307 - 2⁴ = 55487291 is a prime.

It is a super-2 number, since 2×55487307² = 6157682476224498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55487347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26194 + ... + 28232.

It is an arithmetic number, because the mean of its divisors is an integer number (4749120).

Almost surely, 2^55487307 is an apocalyptic number.

55487307 is a deficient number, since it is larger than the sum of its proper divisors (20498613).

55487307 is a wasteful number, since it uses less digits than its factorization.

55487307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2282.

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 55487307 is about 7448.9802657814. The cubic root of 55487307 is about 381.4150999705.

The spelling of 55487307 in words is "fifty-five million, four hundred eighty-seven thousand, three hundred seven".