61157059 has 4 divisors (see below), whose sum is σ = 61178760. Its totient is φ = 61135360.

The previous prime is 61157039. The next prime is 61157077. The reversal of 61157059 is 95075116.

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 61157059 - 2¹¹ = 61155011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61157009) 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, 5857 + ... + 12514.

It is an arithmetic number, because the mean of its divisors is an integer number (15294690).

Almost surely, 2^61157059 is an apocalyptic number.

61157059 is a deficient number, since it is larger than the sum of its proper divisors (21701).

61157059 is a wasteful number, since it uses less digits than its factorization.

61157059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21700.

The product of its (nonzero) digits is 9450, while the sum is 34.

The square root of 61157059 is about 7820.2978843520. The cubic root of 61157059 is about 393.9872770248.

The spelling of 61157059 in words is "sixty-one million, one hundred fifty-seven thousand, fifty-nine".