61136023 has 4 divisors (see below), whose sum is σ = 65838808. Its totient is φ = 56433240.

The previous prime is 61136021. The next prime is 61136027. The reversal of 61136023 is 32063116.

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 61136023 - 2¹ = 61136021 is a prime.

It is a super-2 number, since 2×61136023² = 7475226616513058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61135985 and 61136003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61136021) 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, 2351373 + ... + 2351398.

It is an arithmetic number, because the mean of its divisors is an integer number (16459702).

Almost surely, 2^61136023 is an apocalyptic number.

61136023 is a deficient number, since it is larger than the sum of its proper divisors (4702785).

61136023 is a wasteful number, since it uses less digits than its factorization.

61136023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4702784.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 61136023 is about 7818.9528071219. The cubic root of 61136023 is about 393.9420989923.

Adding to 61136023 its reverse (32063116), we get a palindrome (93199139).

The spelling of 61136023 in words is "sixty-one million, one hundred thirty-six thousand, twenty-three".