63261155 has 16 divisors (see below), whose sum is σ = 81152064. Its totient is φ = 47224320.

The previous prime is 63261119. The next prime is 63261161. The reversal of 63261155 is 55116236.

It is a de Polignac number, because none of the positive numbers 2^k-63261155 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1994 + ... + 11423.

It is an arithmetic number, because the mean of its divisors is an integer number (5072004).

Almost surely, 2^63261155 is an apocalyptic number.

63261155 is a deficient number, since it is larger than the sum of its proper divisors (17890909).

63261155 is a wasteful number, since it uses less digits than its factorization.

63261155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13486.

The product of its digits is 5400, while the sum is 29.

The square root of 63261155 is about 7953.6881382161. The cubic root of 63261155 is about 398.4547779922.

The spelling of 63261155 in words is "sixty-three million, two hundred sixty-one thousand, one hundred fifty-five".