61555092 has 24 divisors (see below), whose sum is σ = 143774400. Its totient is φ = 20497536.

The previous prime is 61555073. The next prime is 61555093. The reversal of 61555092 is 29055516.

It is a super-2 number, since 2×61555092² = 7578058702256928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61555093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13884 + ... + 17772.

It is an arithmetic number, because the mean of its divisors is an integer number (5990600).

Almost surely, 2^61555092 is an apocalyptic number.

It is an amenable number.

61555092 is an abundant number, since it is smaller than the sum of its proper divisors (82219308).

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

61555092 is a wasteful number, since it uses less digits than its factorization.

61555092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5215 (or 5213 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 61555092 is about 7845.7053220217. The cubic root of 61555092 is about 394.8401682035.

The spelling of 61555092 in words is "sixty-one million, five hundred fifty-five thousand, ninety-two".