55098765 has 32 divisors (see below), whose sum is σ = 103113600. Its totient is φ = 27838080.

The previous prime is 55098739. The next prime is 55098779. The reversal of 55098765 is 56789055.

55098765 is a `hidden beast` number, since 5 + 509 + 87 + 65 = 666.

It is not a de Polignac number, because 55098765 - 2⁸ = 55098509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 55098765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8176 + ... + 13305.

It is an arithmetic number, because the mean of its divisors is an integer number (3222300).

Almost surely, 2^55098765 is an apocalyptic number.

It is an amenable number.

55098765 is a deficient number, since it is larger than the sum of its proper divisors (48014835).

55098765 is a wasteful number, since it uses less digits than its factorization.

55098765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21514 (or 21508 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The square root of 55098765 is about 7422.8542354003. The cubic root of 55098765 is about 380.5227454698.

The spelling of 55098765 in words is "fifty-five million, ninety-eight thousand, seven hundred sixty-five".