247877055 has 12 divisors (see below), whose sum is σ = 429653640. Its totient is φ = 132201072.

The previous prime is 247877053. The next prime is 247877057. The reversal of 247877055 is 550778742.

It is an interprime number because it is at equal distance from previous prime (247877053) and next prime (247877057).

It is not a de Polignac number, because 247877055 - 2¹ = 247877053 is a prime.

It is a super-2 number, since 2×247877055² = 122886068790946050, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 5508379 = 247877055 / (2 + 4 + 7 + 8 + 7 + 7 + 0 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 247877055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247877053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2754145 + ... + 2754234.

It is an arithmetic number, because the mean of its divisors is an integer number (35804470).

Almost surely, 2^247877055 is an apocalyptic number.

247877055 is a deficient number, since it is larger than the sum of its proper divisors (181776585).

247877055 is a wasteful number, since it uses less digits than its factorization.

247877055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5508390 (or 5508387 counting only the distinct ones).

The product of its (nonzero) digits is 548800, while the sum is 45.

The square root of 247877055 is about 15744.1117564631. Note that the first 3 decimals coincide. The cubic root of 247877055 is about 628.1722915310.

The spelling of 247877055 in words is "two hundred forty-seven million, eight hundred seventy-seven thousand, fifty-five".