55523047 has 2 divisors, whose sum is σ = 55523048. Its totient is φ = 55523046.

The previous prime is 55523021. The next prime is 55523057. The reversal of 55523047 is 74032555.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55523047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55523057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27761523 + 27761524.

It is an arithmetic number, because the mean of its divisors is an integer number (27761524).

Almost surely, 2^55523047 is an apocalyptic number.

55523047 is a deficient number, since it is larger than the sum of its proper divisors (1).

55523047 is an equidigital number, since it uses as much as digits as its factorization.

55523047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 55523047 is about 7451.3788656865. The cubic root of 55523047 is about 381.4969736497.

The spelling of 55523047 in words is "fifty-five million, five hundred twenty-three thousand, forty-seven".