77830153 has 2 divisors, whose sum is σ = 77830154. Its totient is φ = 77830152.

The previous prime is 77830139. The next prime is 77830163. The reversal of 77830153 is 35103877.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46949904 + 30880249 = 6852^2 + 5557^2 .

It is a cyclic number.

It is not a de Polignac number, because 77830153 - 2¹⁷ = 77699081 is a prime.

It is not a weakly prime, because it can be changed into another prime (77830163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38915076 + 38915077.

It is an arithmetic number, because the mean of its divisors is an integer number (38915077).

Almost surely, 2^77830153 is an apocalyptic number.

It is an amenable number.

77830153 is a deficient number, since it is larger than the sum of its proper divisors (1).

77830153 is an equidigital number, since it uses as much as digits as its factorization.

77830153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 77830153 is about 8822.1399331455. The cubic root of 77830153 is about 426.9555153324.

The spelling of 77830153 in words is "seventy-seven million, eight hundred thirty thousand, one hundred fifty-three".