61738751 has 2 divisors, whose sum is σ = 61738752. Its totient is φ = 61738750.

The previous prime is 61738741. The next prime is 61738757. The reversal of 61738751 is 15783716.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61738751 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61738757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30869375 + 30869376.

It is an arithmetic number, because the mean of its divisors is an integer number (30869376).

Almost surely, 2^61738751 is an apocalyptic number.

61738751 is a deficient number, since it is larger than the sum of its proper divisors (1).

61738751 is an equidigital number, since it uses as much as digits as its factorization.

61738751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 38.

The square root of 61738751 is about 7857.4010334207. The cubic root of 61738751 is about 395.2324669102.

The spelling of 61738751 in words is "sixty-one million, seven hundred thirty-eight thousand, seven hundred fifty-one".