77151131 has 4 divisors (see below), whose sum is σ = 80505552. Its totient is φ = 73796712.

The previous prime is 77151101. The next prime is 77151133. The reversal of 77151131 is 13115177.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13115177 = 17 ⋅771481.

It is a cyclic number.

It is not a de Polignac number, because 77151131 - 2¹⁰ = 77150107 is a prime.

It is a super-2 number, since 2×77151131² = 11904594029158322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77151131.

It is not an unprimeable number, because it can be changed into a prime (77151133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1677176 + ... + 1677221.

It is an arithmetic number, because the mean of its divisors is an integer number (20126388).

Almost surely, 2^77151131 is an apocalyptic number.

77151131 is a deficient number, since it is larger than the sum of its proper divisors (3354421).

77151131 is a wasteful number, since it uses less digits than its factorization.

77151131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3354420.

The product of its digits is 735, while the sum is 26.

The square root of 77151131 is about 8783.5716539458. The cubic root of 77151131 is about 425.7102421697.

The spelling of 77151131 in words is "seventy-seven million, one hundred fifty-one thousand, one hundred thirty-one".