61102089 has 6 divisors (see below), whose sum is σ = 88258586. Its totient is φ = 40734720.

The previous prime is 61102073. The next prime is 61102121. The reversal of 61102089 is 98020116.

It can be written as a sum of positive squares in only one way, i.e., 59028489 + 2073600 = 7683^2 + 1440^2 .

It is not a de Polignac number, because 61102089 - 2⁴ = 61102073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61102039) 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, 3394552 + ... + 3394569.

Almost surely, 2^61102089 is an apocalyptic number.

It is an amenable number.

61102089 is a deficient number, since it is larger than the sum of its proper divisors (27156497).

61102089 is a wasteful number, since it uses less digits than its factorization.

61102089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6789127 (or 6789124 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 61102089 is about 7816.7825222402. The cubic root of 61102089 is about 393.8691986812.

The spelling of 61102089 in words is "sixty-one million, one hundred two thousand, eighty-nine".