61292055 has 32 divisors (see below), whose sum is σ = 113280768. Its totient is φ = 27968000.

The previous prime is 61292047. The next prime is 61292057. The reversal of 61292055 is 55029216.

It is a happy number.

It is not a de Polignac number, because 61292055 - 2³ = 61292047 is a prime.

It is a super-2 number, since 2×61292055² = 7513432012246050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61292057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8121 + ... + 13730.

It is an arithmetic number, because the mean of its divisors is an integer number (3540024).

Almost surely, 2^61292055 is an apocalyptic number.

61292055 is a deficient number, since it is larger than the sum of its proper divisors (51988713).

61292055 is a wasteful number, since it uses less digits than its factorization.

61292055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21887.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 61292055 is about 7828.9242556050. The cubic root of 61292055 is about 394.2769553332.

The spelling of 61292055 in words is "sixty-one million, two hundred ninety-two thousand, fifty-five".