10055005551 has 20 divisors (see below), whose sum is σ = 15039621432. Its totient is φ = 6694777008.

The previous prime is 10055005549. The next prime is 10055005573. The reversal of 10055005551 is 15550055001.

10055005551 is a `hidden beast` number, since 10 + 0 + 550 + 0 + 55 + 51 = 666.

It is not a de Polignac number, because 10055005551 - 2¹ = 10055005549 is a prime.

It is a super-2 number, since 2×10055005551² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10055005511) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15120 + ... + 142613.

Almost surely, 2^10055005551 is an apocalyptic number.

10055005551 is a deficient number, since it is larger than the sum of its proper divisors (4984615881).

10055005551 is an equidigital number, since it uses as much as digits as its factorization.

10055005551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158532 (or 158523 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 27.

The spelling of 10055005551 in words is "ten billion, fifty-five million, five thousand, five hundred fifty-one".