61423277 has 2 divisors, whose sum is σ = 61423278. Its totient is φ = 61423276.

The previous prime is 61423259. The next prime is 61423283. The reversal of 61423277 is 77232416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33396841 + 28026436 = 5779^2 + 5294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61423277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61423217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30711638 + 30711639.

It is an arithmetic number, because the mean of its divisors is an integer number (30711639).

Almost surely, 2^61423277 is an apocalyptic number.

It is an amenable number.

61423277 is a deficient number, since it is larger than the sum of its proper divisors (1).

61423277 is an equidigital number, since it uses as much as digits as its factorization.

61423277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 32.

The square root of 61423277 is about 7837.3003642836. The cubic root of 61423277 is about 394.5581278938.

The spelling of 61423277 in words is "sixty-one million, four hundred twenty-three thousand, two hundred seventy-seven".