55387038 has 16 divisors (see below), whose sum is σ = 126599040. Its totient is φ = 15824856.

The previous prime is 55387027. The next prime is 55387043. The reversal of 55387038 is 83078355.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55386987 and 55387005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659328 + ... + 659411.

It is an arithmetic number, because the mean of its divisors is an integer number (7912440).

Almost surely, 2^55387038 is an apocalyptic number.

55387038 is an abundant number, since it is smaller than the sum of its proper divisors (71212002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55387038 is a wasteful number, since it uses less digits than its factorization.

55387038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318751.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 55387038 is about 7442.2468381531. The cubic root of 55387038 is about 381.1852145404.

The spelling of 55387038 in words is "fifty-five million, three hundred eighty-seven thousand, thirty-eight".