71229057 has 8 divisors (see below), whose sum is σ = 95470080. Its totient is φ = 47237040.

The previous prime is 71229019. The next prime is 71229073. The reversal of 71229057 is 75092217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-71229057 is a prime.

It is a super-2 number, since 2×71229057² = 10147157122218498, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (71229077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61582 + ... + 62727.

It is an arithmetic number, because the mean of its divisors is an integer number (11933760).

Almost surely, 2^71229057 is an apocalyptic number.

It is an amenable number.

71229057 is a deficient number, since it is larger than the sum of its proper divisors (24241023).

71229057 is a wasteful number, since it uses less digits than its factorization.

71229057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124503.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 71229057 is about 8439.7308606377. The cubic root of 71229057 is about 414.5265942525.

The spelling of 71229057 in words is "seventy-one million, two hundred twenty-nine thousand, fifty-seven".