77152149 has 16 divisors (see below), whose sum is σ = 117987840. Its totient is φ = 49775040.

The previous prime is 77152133. The next prime is 77152157. The reversal of 77152149 is 94125177.

It is a happy number.

It is not a de Polignac number, because 77152149 - 2⁴ = 77152133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77152199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45252 + ... + 46925.

It is an arithmetic number, because the mean of its divisors is an integer number (7374240).

Almost surely, 2^77152149 is an apocalyptic number.

It is an amenable number.

77152149 is a deficient number, since it is larger than the sum of its proper divisors (40835691).

77152149 is a wasteful number, since it uses less digits than its factorization.

77152149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92217 (or 92211 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 77152149 is about 8783.6296028464. The cubic root of 77152149 is about 425.7121145601.

The spelling of 77152149 in words is "seventy-seven million, one hundred fifty-two thousand, one hundred forty-nine".