61102791 has 6 divisors (see below), whose sum is σ = 88259600. Its totient is φ = 40735188.

The previous prime is 61102781. The next prime is 61102807. The reversal of 61102791 is 19720116.

It is not a de Polignac number, because 61102791 - 2¹³ = 61094599 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 (61102711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3394591 + ... + 3394608.

Almost surely, 2^61102791 is an apocalyptic number.

61102791 is a deficient number, since it is larger than the sum of its proper divisors (27156809).

61102791 is a wasteful number, since it uses less digits than its factorization.

61102791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6789205 (or 6789202 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 61102791 is about 7816.8274254969. The cubic root of 61102791 is about 393.8707070591.

The spelling of 61102791 in words is "sixty-one million, one hundred two thousand, seven hundred ninety-one".