71252457 has 8 divisors (see below), whose sum is σ = 100591776. Its totient is φ = 44707392.

The previous prime is 71252443. The next prime is 71252497. The reversal of 71252457 is 75425217.

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

It is not a de Polignac number, because 71252457 - 2⁸ = 71252201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71252497) 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, 698503 + ... + 698604.

It is an arithmetic number, because the mean of its divisors is an integer number (12573972).

Almost surely, 2^71252457 is an apocalyptic number.

It is an amenable number.

71252457 is a deficient number, since it is larger than the sum of its proper divisors (29339319).

71252457 is a wasteful number, since it uses less digits than its factorization.

71252457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397127.

The product of its digits is 19600, while the sum is 33.

The square root of 71252457 is about 8441.1170469316. The cubic root of 71252457 is about 414.5719823788.

The spelling of 71252457 in words is "seventy-one million, two hundred fifty-two thousand, four hundred fifty-seven".