56761155 has 96 divisors (see below), whose sum is σ = 115734528. Its totient is φ = 26438400.

The previous prime is 56761141. The next prime is 56761169. The reversal of 56761155 is 55116765.

It is a Cunningham number, because it is equal to 7534²-1.

It is an interprime number because it is at equal distance from previous prime (56761141) and next prime (56761169).

It is not a de Polignac number, because 56761155 - 2⁹ = 56760643 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 414247 + ... + 414383.

It is an arithmetic number, because the mean of its divisors is an integer number (1205568).

Almost surely, 2^56761155 is an apocalyptic number.

56761155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56761155 is an abundant number, since it is smaller than the sum of its proper divisors (58973373).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56761155 is a wasteful number, since it uses less digits than its factorization.

56761155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 187 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 56761155 is about 7533.9999336342. Note that the first 4 decimals coincide. The cubic root of 56761155 is about 384.3118194786.

The spelling of 56761155 in words is "fifty-six million, seven hundred sixty-one thousand, one hundred fifty-five".