55919155 has 8 divisors (see below), whose sum is σ = 67767984. Its totient is φ = 44292000.

The previous prime is 55919111. The next prime is 55919167. The reversal of 55919155 is 55191955.

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

It is not a de Polignac number, because 55919155 - 2⁷ = 55919027 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54861 + ... + 55870.

It is an arithmetic number, because the mean of its divisors is an integer number (8470998).

Almost surely, 2^55919155 is an apocalyptic number.

55919155 is a deficient number, since it is larger than the sum of its proper divisors (11848829).

55919155 is a wasteful number, since it uses less digits than its factorization.

55919155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110837.

The product of its digits is 50625, while the sum is 40.

The square root of 55919155 is about 7477.9111388141. The cubic root of 55919155 is about 382.4020396469.

The spelling of 55919155 in words is "fifty-five million, nine hundred nineteen thousand, one hundred fifty-five".