61901959 has 16 divisors (see below), whose sum is σ = 71884800. Its totient is φ = 52212384.

The previous prime is 61901953. The next prime is 61901963. The reversal of 61901959 is 95910916.

It is not a de Polignac number, because 61901959 - 2⁷ = 61901831 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 (61901953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158937 + ... + 159325.

It is an arithmetic number, because the mean of its divisors is an integer number (4492800).

Almost surely, 2^61901959 is an apocalyptic number.

61901959 is a deficient number, since it is larger than the sum of its proper divisors (9982841).

61901959 is a wasteful number, since it uses less digits than its factorization.

61901959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702.

The product of its (nonzero) digits is 21870, while the sum is 40.

The square root of 61901959 is about 7867.7798011892. The cubic root of 61901959 is about 395.5804295887.

It can be divided in two parts, 6190195 and 9, that multiplied together give a palindrome (55711755).

The spelling of 61901959 in words is "sixty-one million, nine hundred one thousand, nine hundred fifty-nine".