71633057 has 4 divisors (see below), whose sum is σ = 71845956. Its totient is φ = 71420160.

The previous prime is 71633039. The next prime is 71633077. The reversal of 71633057 is 75033617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75033617 = 691 ⋅108587.

It can be written as a sum of positive squares in 2 ways, for example, as 50140561 + 21492496 = 7081^2 + 4636^2 .

It is a cyclic number.

It is not a de Polignac number, because 71633057 - 2¹² = 71628961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71633077) 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, 105944 + ... + 106617.

It is an arithmetic number, because the mean of its divisors is an integer number (17961489).

Almost surely, 2^71633057 is an apocalyptic number.

It is an amenable number.

71633057 is a deficient number, since it is larger than the sum of its proper divisors (212899).

71633057 is a wasteful number, since it uses less digits than its factorization.

71633057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212898.

The product of its (nonzero) digits is 13230, while the sum is 32.

The square root of 71633057 is about 8463.6314310112. The cubic root of 71633057 is about 415.3088270764.

The spelling of 71633057 in words is "seventy-one million, six hundred thirty-three thousand, fifty-seven".