61250279 has 4 divisors (see below), whose sum is σ = 61293720. Its totient is φ = 61206840.

The previous prime is 61250257. The next prime is 61250297. The reversal of 61250279 is 97205216.

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

It is a cyclic number.

It is not a de Polignac number, because 61250279 - 2²⁴ = 44473063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61250179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19532 + ... + 22449.

It is an arithmetic number, because the mean of its divisors is an integer number (15323430).

Almost surely, 2^61250279 is an apocalyptic number.

61250279 is a deficient number, since it is larger than the sum of its proper divisors (43441).

61250279 is a wasteful number, since it uses less digits than its factorization.

61250279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43440.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 61250279 is about 7826.2557458851. The cubic root of 61250279 is about 394.1873566747.

The spelling of 61250279 in words is "sixty-one million, two hundred fifty thousand, two hundred seventy-nine".