77151952 has 10 divisors (see below), whose sum is σ = 149481938. Its totient is φ = 38575968.

The previous prime is 77151931. The next prime is 77151973. The reversal of 77151952 is 25915177.

It is an interprime number because it is at equal distance from previous prime (77151931) and next prime (77151973).

It can be written as a sum of positive squares in only one way, i.e., 76667536 + 484416 = 8756^2 + 696^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2410983 + ... + 2411014.

Almost surely, 2^77151952 is an apocalyptic number.

It is an amenable number.

77151952 is a deficient number, since it is larger than the sum of its proper divisors (72329986).

77151952 is a wasteful number, since it uses less digits than its factorization.

77151952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4822005 (or 4821999 counting only the distinct ones).

The product of its digits is 22050, while the sum is 37.

The square root of 77151952 is about 8783.6183887963. The cubic root of 77151952 is about 425.7117522226.

The spelling of 77151952 in words is "seventy-seven million, one hundred fifty-one thousand, nine hundred fifty-two".