71521354 has 8 divisors (see below), whose sum is σ = 107321760. Its totient is φ = 35747436.

The previous prime is 71521313. The next prime is 71521369. The reversal of 71521354 is 45312517.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2827 + ... + 12289.

It is an arithmetic number, because the mean of its divisors is an integer number (13415220).

Almost surely, 2^71521354 is an apocalyptic number.

71521354 is a deficient number, since it is larger than the sum of its proper divisors (35800406).

71521354 is a wasteful number, since it uses less digits than its factorization.

71521354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13244.

The product of its digits is 4200, while the sum is 28.

The square root of 71521354 is about 8457.0298568706. The cubic root of 71521354 is about 415.0928403119.

The spelling of 71521354 in words is "seventy-one million, five hundred twenty-one thousand, three hundred fifty-four".