55551651530 has 32 divisors (see below), whose sum is σ = 102449627280. Its totient is φ = 21674926080.

The previous prime is 55551651523. The next prime is 55551651541. The reversal of 55551651530 is 3515615555.

It can be written as a sum of positive squares in 8 ways, for example, as 44584744801 + 10966906729 = 211151^2 + 104723^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (41).

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, 4096922 + ... + 4110458.

Almost surely, 2^55551651530 is an apocalyptic number.

55551651530 is a deficient number, since it is larger than the sum of its proper divisors (46897975750).

55551651530 is a wasteful number, since it uses less digits than its factorization.

55551651530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23594.

The product of its (nonzero) digits is 281250, while the sum is 41.

The spelling of 55551651530 in words is "fifty-five billion, five hundred fifty-one million, six hundred fifty-one thousand, five hundred thirty".