61715011 has 4 divisors (see below), whose sum is σ = 61759512. Its totient is φ = 61670512.

The previous prime is 61715009. The next prime is 61715033. The reversal of 61715011 is 11051716.

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 61715011 - 2¹ = 61715009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61715051) 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, 20101 + ... + 22966.

It is an arithmetic number, because the mean of its divisors is an integer number (15439878).

Almost surely, 2^61715011 is an apocalyptic number.

61715011 is a deficient number, since it is larger than the sum of its proper divisors (44501).

61715011 is a wasteful number, since it uses less digits than its factorization.

61715011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44500.

The product of its (nonzero) digits is 210, while the sum is 22.

The square root of 61715011 is about 7855.8902105363. The cubic root of 61715011 is about 395.1818016932.

Adding to 61715011 its reverse (11051716), we get a palindrome (72766727).

The spelling of 61715011 in words is "sixty-one million, seven hundred fifteen thousand, eleven".