61177313 has 2 divisors, whose sum is σ = 61177314. Its totient is φ = 61177312.

The previous prime is 61177307. The next prime is 61177331. The reversal of 61177313 is 31377116.

Together with next prime (61177331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61105489 + 71824 = 7817^2 + 268^2 .

It is a cyclic number.

It is not a de Polignac number, because 61177313 - 2⁸ = 61177057 is a prime.

It is not a weakly prime, because it can be changed into another prime (61177813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30588656 + 30588657.

It is an arithmetic number, because the mean of its divisors is an integer number (30588657).

Almost surely, 2^61177313 is an apocalyptic number.

It is an amenable number.

61177313 is a deficient number, since it is larger than the sum of its proper divisors (1).

61177313 is an equidigital number, since it uses as much as digits as its factorization.

61177313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2646, while the sum is 29.

The square root of 61177313 is about 7821.5927406124. The cubic root of 61177313 is about 394.0307658043.

The spelling of 61177313 in words is "sixty-one million, one hundred seventy-seven thousand, three hundred thirteen".