55388105 has 8 divisors (see below), whose sum is σ = 66811272. Its totient is φ = 44080128.

The previous prime is 55388101. The next prime is 55388107. The reversal of 55388105 is 50188355.

It can be written as a sum of positive squares in 4 ways, for example, as 583696 + 54804409 = 764^2 + 7403^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 55388105 - 2² = 55388101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55388101) 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, 27734 + ... + 29663.

It is an arithmetic number, because the mean of its divisors is an integer number (8351409).

Almost surely, 2^55388105 is an apocalyptic number.

It is an amenable number.

55388105 is a deficient number, since it is larger than the sum of its proper divisors (11423167).

55388105 is a wasteful number, since it uses less digits than its factorization.

55388105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57595.

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 55388105 is about 7442.3185231485. The cubic root of 55388105 is about 381.1876622973.

The spelling of 55388105 in words is "fifty-five million, three hundred eighty-eight thousand, one hundred five".