513250221 has 16 divisors (see below), whose sum is σ = 779005440. Its totient is φ = 297535920.

The previous prime is 513250189. The next prime is 513250223. The reversal of 513250221 is 122052315.

It is not a de Polignac number, because 513250221 - 2⁵ = 513250189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513250223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337351 + ... + 338868.

It is an arithmetic number, because the mean of its divisors is an integer number (48687840).

Almost surely, 2^513250221 is an apocalyptic number.

It is an amenable number.

513250221 is a deficient number, since it is larger than the sum of its proper divisors (265755219).

513250221 is a wasteful number, since it uses less digits than its factorization.

513250221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676256.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 513250221 is about 22655.0263959237. The cubic root of 513250221 is about 800.6506274822.

The spelling of 513250221 in words is "five hundred thirteen million, two hundred fifty thousand, two hundred twenty-one".