61653258 has 32 divisors (see below), whose sum is σ = 140353920. Its totient is φ = 20049120.

The previous prime is 61653239. The next prime is 61653269. The reversal of 61653258 is 85235616.

61653258 is a `hidden beast` number, since 616 + 5 + 32 + 5 + 8 = 666.

It is a super-2 number, since 2×61653258² = 7602248444029128, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11710 + ... + 16137.

It is an arithmetic number, because the mean of its divisors is an integer number (4386060).

Almost surely, 2^61653258 is an apocalyptic number.

61653258 is an abundant number, since it is smaller than the sum of its proper divisors (78700662).

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

61653258 is a wasteful number, since it uses less digits than its factorization.

61653258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27899 (or 27893 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 61653258 is about 7851.9588638759. The cubic root of 61653258 is about 395.0499493529.

The spelling of 61653258 in words is "sixty-one million, six hundred fifty-three thousand, two hundred fifty-eight".