71892057 has 4 divisors (see below), whose sum is σ = 95856080. Its totient is φ = 47928036.

The previous prime is 71892049. The next prime is 71892059. The reversal of 71892057 is 75029817.

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 not a de Polignac number, because 71892057 - 2³ = 71892049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71892059) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 11982007 + ... + 11982012.

It is an arithmetic number, because the mean of its divisors is an integer number (23964020).

Almost surely, 2^71892057 is an apocalyptic number.

It is an amenable number.

71892057 is a deficient number, since it is larger than the sum of its proper divisors (23964023).

71892057 is a wasteful number, since it uses less digits than its factorization.

71892057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23964022.

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 71892057 is about 8478.9183862094. The cubic root of 71892057 is about 415.8087620292.

The spelling of 71892057 in words is "seventy-one million, eight hundred ninety-two thousand, fifty-seven".