61181059 has 4 divisors (see below), whose sum is σ = 61214400. Its totient is φ = 61147720.

The previous prime is 61181051. The next prime is 61181069. The reversal of 61181059 is 95018116.

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 61181059 - 2³ = 61181051 is a prime.

It is a super-2 number, since 2×61181059² = 7486243960722962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61181059.

It is not an unprimeable number, because it can be changed into a prime (61181051) 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, 13747 + ... + 17644.

It is an arithmetic number, because the mean of its divisors is an integer number (15303600).

Almost surely, 2^61181059 is an apocalyptic number.

61181059 is a deficient number, since it is larger than the sum of its proper divisors (33341).

61181059 is a wasteful number, since it uses less digits than its factorization.

61181059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33340.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 61181059 is about 7821.8322022401. The cubic root of 61181059 is about 394.0388080509.

The spelling of 61181059 in words is "sixty-one million, one hundred eighty-one thousand, fifty-nine".