61516023 has 4 divisors (see below), whose sum is σ = 82021368. Its totient is φ = 41010680.

The previous prime is 61515967. The next prime is 61516051. The reversal of 61516023 is 32061516.

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 61516023 - 2⁶ = 61515959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61515984 and 61516002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61516123) 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, 10252668 + ... + 10252673.

It is an arithmetic number, because the mean of its divisors is an integer number (20505342).

Almost surely, 2^61516023 is an apocalyptic number.

61516023 is a deficient number, since it is larger than the sum of its proper divisors (20505345).

61516023 is a wasteful number, since it uses less digits than its factorization.

61516023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20505344.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 61516023 is about 7843.2150933147. The cubic root of 61516023 is about 394.7566155419.

Adding to 61516023 its reverse (32061516), we get a palindrome (93577539).

The spelling of 61516023 in words is "sixty-one million, five hundred sixteen thousand, twenty-three".