247560055 has 4 divisors (see below), whose sum is σ = 297072072. Its totient is φ = 198048040.

The previous prime is 247560023. The next prime is 247560067. The reversal of 247560055 is 550065742.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 247560055 - 2⁵ = 247560023 is a prime.

It is a super-2 number, since 2×247560055² = 122571961663206050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 247560055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24756001 + ... + 24756010.

It is an arithmetic number, because the mean of its divisors is an integer number (74268018).

Almost surely, 2^247560055 is an apocalyptic number.

247560055 is a deficient number, since it is larger than the sum of its proper divisors (49512017).

247560055 is an equidigital number, since it uses as much as digits as its factorization.

247560055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49512016.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 247560055 is about 15734.0412799764. The cubic root of 247560055 is about 627.9043958687.

The spelling of 247560055 in words is "two hundred forty-seven million, five hundred sixty thousand, fifty-five".