61500771 has 12 divisors (see below), whose sum is σ = 91235872. Its totient is φ = 39892176.

The previous prime is 61500767. The next prime is 61500797. The reversal of 61500771 is 17700516.

It is not a de Polignac number, because 61500771 - 2² = 61500767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61500721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92011 + ... + 92676.

Almost surely, 2^61500771 is an apocalyptic number.

61500771 is a deficient number, since it is larger than the sum of its proper divisors (29735101).

61500771 is a wasteful number, since it uses less digits than its factorization.

61500771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184730 (or 184727 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 61500771 is about 7842.2427276896. The cubic root of 61500771 is about 394.7239881316.

The spelling of 61500771 in words is "sixty-one million, five hundred thousand, seven hundred seventy-one".