61085751 has 4 divisors (see below), whose sum is σ = 81447672. Its totient is φ = 40723832.

The previous prime is 61085707. The next prime is 61085753. The reversal of 61085751 is 15758016.

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 61085751 - 2⁷ = 61085623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61085753) 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, 10180956 + ... + 10180961.

It is an arithmetic number, because the mean of its divisors is an integer number (20361918).

Almost surely, 2^61085751 is an apocalyptic number.

61085751 is a deficient number, since it is larger than the sum of its proper divisors (20361921).

61085751 is a wasteful number, since it uses less digits than its factorization.

61085751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20361920.

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 61085751 is about 7815.7373932342. The cubic root of 61085751 is about 393.8340901783.

The spelling of 61085751 in words is "sixty-one million, eighty-five thousand, seven hundred fifty-one".