55810747 has 2 divisors, whose sum is σ = 55810748. Its totient is φ = 55810746.

The previous prime is 55810739. The next prime is 55810751. The reversal of 55810747 is 74701855.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55810747 - 2³ = 55810739 is a prime.

It is a super-2 number, since 2×55810747² = 6229678961396018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55810787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27905373 + 27905374.

It is an arithmetic number, because the mean of its divisors is an integer number (27905374).

Almost surely, 2^55810747 is an apocalyptic number.

55810747 is a deficient number, since it is larger than the sum of its proper divisors (1).

55810747 is an equidigital number, since it uses as much as digits as its factorization.

55810747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 55810747 is about 7470.6590740041. The cubic root of 55810747 is about 382.1547644602.

The spelling of 55810747 in words is "fifty-five million, eight hundred ten thousand, seven hundred forty-seven".