514790721 has 15 divisors (see below), whose sum is σ = 769313523. Its totient is φ = 343057680.

The previous prime is 514790663. The next prime is 514790741. The reversal of 514790721 is 127097415.

It is a happy number.

The square root of 514790721 is 22689.

It is a perfect power (a square), and thus also a powerful number.

514790721 is a `hidden beast` number, since 514 + 79 + 0 + 72 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 408321 + 514382400 = 639^2 + 22680^2 .

It is not a de Polignac number, because 514790721 - 2⁷ = 514790593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (514790741) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 202941 + ... + 205461.

Almost surely, 2^514790721 is an apocalyptic number.

514790721 is the 22689-th square number.

514790721 is the 11345-th centered octagonal number.

It is an amenable number.

514790721 is a deficient number, since it is larger than the sum of its proper divisors (254522802).

514790721 is an frugal number, since it uses more digits than its factorization.

514790721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5054 (or 2524 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The cubic root of 514790721 is about 801.4508676590.

Multiplying 514790721 by its sum of digits (36), we get a square (18532465956 = 136134²).

The spelling of 514790721 in words is "five hundred fourteen million, seven hundred ninety thousand, seven hundred twenty-one".