61612183 has 2 divisors, whose sum is σ = 61612184. Its totient is φ = 61612182.

The previous prime is 61612181. The next prime is 61612223. The reversal of 61612183 is 38121616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61612183 - 2¹ = 61612181 is a prime.

It is a super-2 number, since 2×61612183² = 7592122188050978, which contains 22 as substring.

Together with 61612181, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61612181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30806091 + 30806092.

It is an arithmetic number, because the mean of its divisors is an integer number (30806092).

Almost surely, 2^61612183 is an apocalyptic number.

61612183 is a deficient number, since it is larger than the sum of its proper divisors (1).

61612183 is an equidigital number, since it uses as much as digits as its factorization.

61612183 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The square root of 61612183 is about 7849.3428387350. The cubic root of 61612183 is about 394.9621990211.

Adding to 61612183 its reverse (38121616), we get a palindrome (99733799).

The spelling of 61612183 in words is "sixty-one million, six hundred twelve thousand, one hundred eighty-three".