77631053 has 2 divisors, whose sum is σ = 77631054. Its totient is φ = 77631052.

The previous prime is 77631041. The next prime is 77631067. The reversal of 77631053 is 35013677.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73994404 + 3636649 = 8602^2 + 1907^2 .

It is a cyclic number.

It is not a de Polignac number, because 77631053 - 2⁶ = 77630989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77631553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38815526 + 38815527.

It is an arithmetic number, because the mean of its divisors is an integer number (38815527).

Almost surely, 2^77631053 is an apocalyptic number.

It is an amenable number.

77631053 is a deficient number, since it is larger than the sum of its proper divisors (1).

77631053 is an equidigital number, since it uses as much as digits as its factorization.

77631053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13230, while the sum is 32.

The square root of 77631053 is about 8810.8485970422. The cubic root of 77631053 is about 426.5911345651.

The spelling of 77631053 in words is "seventy-seven million, six hundred thirty-one thousand, fifty-three".