77137141 has 4 divisors (see below), whose sum is σ = 78931072. Its totient is φ = 75343212.

The previous prime is 77137139. The next prime is 77137157. The reversal of 77137141 is 14173177.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77137141 - 2¹ = 77137139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77137121) 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, 896901 + ... + 896986.

It is an arithmetic number, because the mean of its divisors is an integer number (19732768).

Almost surely, 2^77137141 is an apocalyptic number.

It is an amenable number.

77137141 is a deficient number, since it is larger than the sum of its proper divisors (1793931).

77137141 is a wasteful number, since it uses less digits than its factorization.

77137141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793930.

The product of its digits is 4116, while the sum is 31.

The square root of 77137141 is about 8782.7752447618. The cubic root of 77137141 is about 425.6845089271.

The spelling of 77137141 in words is "seventy-seven million, one hundred thirty-seven thousand, one hundred forty-one".