61431850 has 24 divisors (see below), whose sum is σ = 119233440. Its totient is φ = 23503920.

The previous prime is 61431847. The next prime is 61431857. The reversal of 61431850 is 5813416.

It is not an unprimeable number, because it can be changed into a prime (61431857) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 25560 + ... + 27859.

It is an arithmetic number, because the mean of its divisors is an integer number (4968060).

Almost surely, 2^61431850 is an apocalyptic number.

61431850 is a deficient number, since it is larger than the sum of its proper divisors (57801590).

61431850 is a wasteful number, since it uses less digits than its factorization.

61431850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53454 (or 53449 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 61431850 is about 7837.8472809822. The cubic root of 61431850 is about 394.5764835272.

The spelling of 61431850 in words is "sixty-one million, four hundred thirty-one thousand, eight hundred fifty".