55415047 has 2 divisors, whose sum is σ = 55415048. Its totient is φ = 55415046.

The previous prime is 55414987. The next prime is 55415057. The reversal of 55415047 is 74051455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55415047 - 2¹⁵ = 55382279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55415057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27707523 + 27707524.

It is an arithmetic number, because the mean of its divisors is an integer number (27707524).

Almost surely, 2^55415047 is an apocalyptic number.

55415047 is a deficient number, since it is larger than the sum of its proper divisors (1).

55415047 is an equidigital number, since it uses as much as digits as its factorization.

55415047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 55415047 is about 7444.1283573028. The cubic root of 55415047 is about 381.2494583169.

The spelling of 55415047 in words is "fifty-five million, four hundred fifteen thousand, forty-seven".