71501213 has 8 divisors (see below), whose sum is σ = 81783360. Its totient is φ = 61236000.

The previous prime is 71501203. The next prime is 71501251. The reversal of 71501213 is 31210517.

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

It is not a de Polignac number, because 71501213 - 2⁴ = 71501197 is a prime.

It is a super-2 number, since 2×71501213² = 10224846920942738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71501203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6713 + ... + 13713.

It is an arithmetic number, because the mean of its divisors is an integer number (10222920).

Almost surely, 2^71501213 is an apocalyptic number.

It is an amenable number.

71501213 is a deficient number, since it is larger than the sum of its proper divisors (10282147).

71501213 is a wasteful number, since it uses less digits than its factorization.

71501213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8467.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 71501213 is about 8455.8389885333. The cubic root of 71501213 is about 415.0538721374.

The spelling of 71501213 in words is "seventy-one million, five hundred one thousand, two hundred thirteen".