71157530 has 32 divisors (see below), whose sum is σ = 132192000. Its totient is φ = 27563200.

The previous prime is 71157521. The next prime is 71157533. The reversal of 71157530 is 3575117.

It is a junction number, because it is equal to n+sod(n) for n = 71157493 and 71157502.

It is not an unprimeable number, because it can be changed into a prime (71157533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46721 + ... + 48219.

It is an arithmetic number, because the mean of its divisors is an integer number (4131000).

Almost surely, 2^71157530 is an apocalyptic number.

71157530 is a deficient number, since it is larger than the sum of its proper divisors (61034470).

71157530 is a wasteful number, since it uses less digits than its factorization.

71157530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654.

The product of its (nonzero) digits is 3675, while the sum is 29.

The square root of 71157530 is about 8435.4922796479. The cubic root of 71157530 is about 414.3877942781.

The spelling of 71157530 in words is "seventy-one million, one hundred fifty-seven thousand, five hundred thirty".