55770166251 has 48 divisors (see below), whose sum is σ = 89984993280. Its totient is φ = 34416264960.

The previous prime is 55770166241. The next prime is 55770166259. The reversal of 55770166251 is 15266107755.

55770166251 is a `hidden beast` number, since 5 + 5 + 7 + 7 + 0 + 16 + 625 + 1 = 666.

It is not a de Polignac number, because 55770166251 - 2¹⁸ = 55769904107 is a prime.

It is a super-2 number, since 2×55770166251² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55770166197 and 55770166206.

It is not an unprimeable number, because it can be changed into a prime (55770166259) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12315 + ... + 334203.

It is an arithmetic number, because the mean of its divisors is an integer number (1874687360).

Almost surely, 2^55770166251 is an apocalyptic number.

55770166251 is a deficient number, since it is larger than the sum of its proper divisors (34214827029).

55770166251 is a wasteful number, since it uses less digits than its factorization.

55770166251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321958 (or 321946 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 45.

The spelling of 55770166251 in words is "fifty-five billion, seven hundred seventy million, one hundred sixty-six thousand, two hundred fifty-one".