364521721 has 8 divisors (see below), whose sum is σ = 369574400. Its totient is φ = 359480160.

The previous prime is 364521719. The next prime is 364521727. The reversal of 364521721 is 127125463.

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

It is a cyclic number.

It is not a de Polignac number, because 364521721 - 2¹ = 364521719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (364521727) 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, 79861 + ... + 84301.

It is an arithmetic number, because the mean of its divisors is an integer number (46196800).

Almost surely, 2^364521721 is an apocalyptic number.

It is an amenable number.

364521721 is a deficient number, since it is larger than the sum of its proper divisors (5052679).

364521721 is a wasteful number, since it uses less digits than its factorization.

364521721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5559.

The product of its digits is 10080, while the sum is 31.

The square root of 364521721 is about 19092.4519378732. The cubic root of 364521721 is about 714.3446623788.

The spelling of 364521721 in words is "three hundred sixty-four million, five hundred twenty-one thousand, seven hundred twenty-one".