5215730 has 32 divisors (see below), whose sum is σ = 10314864. Its totient is φ = 1886976.

The previous prime is 5215729. The next prime is 5215739. The reversal of 5215730 is 375125.

It can be written as a sum of positive squares in 8 ways, for example, as 2128681 + 3087049 = 1459^2 + 1757^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5215696 and 5215705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5215739) 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, 6512 + ... + 7268.

Almost surely, 2^5215730 is an apocalyptic number.

5215730 is a deficient number, since it is larger than the sum of its proper divisors (5099134).

5215730 is a wasteful number, since it uses less digits than its factorization.

5215730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 5215730 is about 2283.7972764674. The cubic root of 5215730 is about 173.4223367692.

The spelling of 5215730 in words is "five million, two hundred fifteen thousand, seven hundred thirty".