55699655 has 8 divisors (see below), whose sum is σ = 72915984. Its totient is φ = 40508800.

The previous prime is 55699639. The next prime is 55699703.

55699655 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 55699655 - 2⁴ = 55699639 is a prime.

It is a Duffinian number.

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, 506306 + ... + 506415.

It is an arithmetic number, because the mean of its divisors is an integer number (9114498).

Almost surely, 2^55699655 is an apocalyptic number.

55699655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55699655 is a deficient number, since it is larger than the sum of its proper divisors (17216329).

55699655 is a wasteful number, since it uses less digits than its factorization.

55699655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012737.

The product of its digits is 1822500, while the sum is 50.

The square root of 55699655 is about 7463.2201495065. The cubic root of 55699655 is about 381.9010347325.

The spelling of 55699655 in words is "fifty-five million, six hundred ninety-nine thousand, six hundred fifty-five".