55757147 has 2 divisors, whose sum is σ = 55757148. Its totient is φ = 55757146.

The previous prime is 55757131. The next prime is 55757179. The reversal of 55757147 is 74175755.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55757147 - 2⁴ = 55757131 is a prime.

It is not a weakly prime, because it can be changed into another prime (55757347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27878573 + 27878574.

It is an arithmetic number, because the mean of its divisors is an integer number (27878574).

Almost surely, 2^55757147 is an apocalyptic number.

55757147 is a deficient number, since it is larger than the sum of its proper divisors (1).

55757147 is an equidigital number, since it uses as much as digits as its factorization.

55757147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 171500, while the sum is 41.

The square root of 55757147 is about 7467.0708447155. The cubic root of 55757147 is about 382.0323862603.

The spelling of 55757147 in words is "fifty-five million, seven hundred fifty-seven thousand, one hundred forty-seven".