521374701 has 4 divisors (see below), whose sum is σ = 695166272. Its totient is φ = 347583132.

The previous prime is 521374697. The next prime is 521374703. The reversal of 521374701 is 107473125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 521374701 - 2² = 521374697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521374703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86895781 + ... + 86895786.

It is an arithmetic number, because the mean of its divisors is an integer number (173791568).

Almost surely, 2^521374701 is an apocalyptic number.

It is an amenable number.

521374701 is a deficient number, since it is larger than the sum of its proper divisors (173791571).

521374701 is a wasteful number, since it uses less digits than its factorization.

521374701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173791570.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 521374701 is about 22833.6309202019. The cubic root of 521374701 is about 804.8531558340.

The spelling of 521374701 in words is "five hundred twenty-one million, three hundred seventy-four thousand, seven hundred one".