55766251 has 2 divisors, whose sum is σ = 55766252. Its totient is φ = 55766250.

The previous prime is 55766231. The next prime is 55766327. The reversal of 55766251 is 15266755.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55766251 - 2⁵ = 55766219 is a prime.

It is a super-3 number, since 3×55766251³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55766251.

It is not a weakly prime, because it can be changed into another prime (55766201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27883125 + 27883126.

It is an arithmetic number, because the mean of its divisors is an integer number (27883126).

Almost surely, 2^55766251 is an apocalyptic number.

55766251 is a deficient number, since it is larger than the sum of its proper divisors (1).

55766251 is an equidigital number, since it uses as much as digits as its factorization.

55766251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63000, while the sum is 37.

The square root of 55766251 is about 7467.6804296917. The cubic root of 55766251 is about 382.0531778165.

The spelling of 55766251 in words is "fifty-five million, seven hundred sixty-six thousand, two hundred fifty-one".