77161542 has 32 divisors (see below), whose sum is σ = 159903744. Its totient is φ = 24796800.

The previous prime is 77161529. The next prime is 77161543. The reversal of 77161542 is 24516177.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77161543) 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 in 15 ways as a sum of consecutive naturals, for example, 62067 + ... + 63297.

It is an arithmetic number, because the mean of its divisors is an integer number (4996992).

Almost surely, 2^77161542 is an apocalyptic number.

77161542 is an abundant number, since it is smaller than the sum of its proper divisors (82742202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77161542 is a wasteful number, since it uses less digits than its factorization.

77161542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604.

The product of its digits is 11760, while the sum is 33.

The square root of 77161542 is about 8784.1642744202. The cubic root of 77161542 is about 425.7293901715.

The spelling of 77161542 in words is "seventy-seven million, one hundred sixty-one thousand, five hundred forty-two".