77051651 has 2 divisors, whose sum is σ = 77051652. Its totient is φ = 77051650.

The previous prime is 77051627. The next prime is 77051683. The reversal of 77051651 is 15615077.

It is an a-pointer prime, because the next prime (77051683) can be obtained adding 77051651 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77051651 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (77051621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38525825 + 38525826.

It is an arithmetic number, because the mean of its divisors is an integer number (38525826).

Almost surely, 2^77051651 is an apocalyptic number.

77051651 is a deficient number, since it is larger than the sum of its proper divisors (1).

77051651 is an equidigital number, since it uses as much as digits as its factorization.

77051651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 77051651 is about 8777.9069828747. The cubic root of 77051651 is about 425.5271907591.

The spelling of 77051651 in words is "seventy-seven million, fifty-one thousand, six hundred fifty-one".