71048251 has 4 divisors (see below), whose sum is σ = 72968512. Its totient is φ = 69127992.

The previous prime is 71048233. The next prime is 71048269. The reversal of 71048251 is 15284017.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15284017 = 7 ⋅2183431.

It is an interprime number because it is at equal distance from previous prime (71048233) and next prime (71048269).

It is a cyclic number.

It is not a de Polignac number, because 71048251 - 2⁷ = 71048123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71048281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960075 + ... + 960148.

It is an arithmetic number, because the mean of its divisors is an integer number (18242128).

Almost surely, 2^71048251 is an apocalyptic number.

71048251 is a deficient number, since it is larger than the sum of its proper divisors (1920261).

71048251 is a wasteful number, since it uses less digits than its factorization.

71048251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920260.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 71048251 is about 8429.0124569845. The cubic root of 71048251 is about 414.1755558596.

The spelling of 71048251 in words is "seventy-one million, forty-eight thousand, two hundred fifty-one".