247263155 has 16 divisors (see below), whose sum is σ = 300478464. Its totient is φ = 195318240.

The previous prime is 247263143. The next prime is 247263157. The reversal of 247263155 is 551362742.

It is not a de Polignac number, because 247263155 - 2¹⁰ = 247262131 is a prime.

It is a super-2 number, since 2×247263155² = 122278135641108050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247263157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147854 + ... + 149516.

It is an arithmetic number, because the mean of its divisors is an integer number (18779904).

Almost surely, 2^247263155 is an apocalyptic number.

247263155 is a deficient number, since it is larger than the sum of its proper divisors (53215309).

247263155 is a wasteful number, since it uses less digits than its factorization.

247263155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026.

The product of its digits is 50400, while the sum is 35.

The square root of 247263155 is about 15724.6034926163. The cubic root of 247263155 is about 627.6532791695.

The spelling of 247263155 in words is "two hundred forty-seven million, two hundred sixty-three thousand, one hundred fifty-five".