247974055 has 24 divisors (see below), whose sum is σ = 346911120. Its totient is φ = 169666560.

The previous prime is 247974043. The next prime is 247974079. The reversal of 247974055 is 550479742.

It is not a de Polignac number, because 247974055 - 2¹⁹ = 247449767 is a prime.

It is a super-2 number, since 2×247974055² = 122982263906286050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156256 + ... + 157834.

It is an arithmetic number, because the mean of its divisors is an integer number (14454630).

Almost surely, 2^247974055 is an apocalyptic number.

247974055 is a deficient number, since it is larger than the sum of its proper divisors (98937065).

247974055 is a wasteful number, since it uses less digits than its factorization.

247974055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239 (or 2232 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

The square root of 247974055 is about 15747.1919719041. The cubic root of 247974055 is about 628.2542202731.

The spelling of 247974055 in words is "two hundred forty-seven million, nine hundred seventy-four thousand, fifty-five".