55418071 has 2 divisors, whose sum is σ = 55418072. Its totient is φ = 55418070.

The previous prime is 55418053. The next prime is 55418081. The reversal of 55418071 is 17081455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55418071 - 2¹⁷ = 55286999 is a prime.

It is a super-2 number, since 2×55418071² = 6142325186722082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55418081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27709035 + 27709036.

It is an arithmetic number, because the mean of its divisors is an integer number (27709036).

Almost surely, 2^55418071 is an apocalyptic number.

55418071 is a deficient number, since it is larger than the sum of its proper divisors (1).

55418071 is an equidigital number, since it uses as much as digits as its factorization.

55418071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 55418071 is about 7444.3314676336. The cubic root of 55418071 is about 381.2563931204.

The spelling of 55418071 in words is "fifty-five million, four hundred eighteen thousand, seventy-one".