71715051 has 10 divisors (see below), whose sum is σ = 107130012. Its totient is φ = 47809980.

The previous prime is 71715047. The next prime is 71715067. The reversal of 71715051 is 15051717.

It is not a de Polignac number, because 71715051 - 2² = 71715047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (71715011) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 442605 + ... + 442766.

Almost surely, 2^71715051 is an apocalyptic number.

71715051 is a deficient number, since it is larger than the sum of its proper divisors (35414961).

71715051 is an equidigital number, since it uses as much as digits as its factorization.

71715051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885383 (or 885374 counting only the distinct ones).

The product of its (nonzero) digits is 1225, while the sum is 27.

The square root of 71715051 is about 8468.4739475303. The cubic root of 71715051 is about 415.4672262333.

Adding to 71715051 its reverse (15051717), we get a palindrome (86766768).

The spelling of 71715051 in words is "seventy-one million, seven hundred fifteen thousand, fifty-one".