61251958 has 4 divisors (see below), whose sum is σ = 91877940. Its totient is φ = 30625978.

The previous prime is 61251947. The next prime is 61251959. The reversal of 61251958 is 85915216.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61251959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15312988 + ... + 15312991.

It is an arithmetic number, because the mean of its divisors is an integer number (22969485).

Almost surely, 2^61251958 is an apocalyptic number.

61251958 is a deficient number, since it is larger than the sum of its proper divisors (30625982).

61251958 is a wasteful number, since it uses less digits than its factorization.

61251958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30625981.

The product of its digits is 21600, while the sum is 37.

The square root of 61251958 is about 7826.3630122810. The cubic root of 61251958 is about 394.1909584788.

The spelling of 61251958 in words is "sixty-one million, two hundred fifty-one thousand, nine hundred fifty-eight".