61032091 has 8 divisors (see below), whose sum is σ = 65196144. Its totient is φ = 56931840.

The previous prime is 61032089. The next prime is 61032131. The reversal of 61032091 is 19023016.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61032091 - 2¹ = 61032089 is a prime.

It is a super-2 number, since 2×61032091² = 7449832263664562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61032031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13965 + ... + 17806.

It is an arithmetic number, because the mean of its divisors is an integer number (8149518).

Almost surely, 2^61032091 is an apocalyptic number.

61032091 is a deficient number, since it is larger than the sum of its proper divisors (4164053).

61032091 is a wasteful number, since it uses less digits than its factorization.

61032091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31901.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 61032091 is about 7812.3038215369. The cubic root of 61032091 is about 393.7187368812.

The spelling of 61032091 in words is "sixty-one million, thirty-two thousand, ninety-one".