55080905 has 16 divisors (see below), whose sum is σ = 75902400. Its totient is φ = 37949760.

The previous prime is 55080887. The next prime is 55080911. The reversal of 55080905 is 50908055.

It is not a de Polignac number, because 55080905 - 2¹⁶ = 55015369 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25310 + ... + 27399.

It is an arithmetic number, because the mean of its divisors is an integer number (4743900).

Almost surely, 2^55080905 is an apocalyptic number.

55080905 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55080905 is a deficient number, since it is larger than the sum of its proper divisors (20821495).

55080905 is a wasteful number, since it uses less digits than its factorization.

55080905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52744.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 55080905 is about 7421.6510966226. The cubic root of 55080905 is about 380.4816261533.

The spelling of 55080905 in words is "fifty-five million, eighty thousand, nine hundred five".