5215706 has 4 divisors (see below), whose sum is σ = 7823562. Its totient is φ = 2607852.

The previous prime is 5215703. The next prime is 5215729. The reversal of 5215706 is 6075125.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2859481 + 2356225 = 1691^2 + 1535^2 .

It is a super-3 number, since 3×5215706³ (a number of 21 digits) contains 333 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (5215703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1303925 + ... + 1303928.

Almost surely, 2^5215706 is an apocalyptic number.

5215706 is a deficient number, since it is larger than the sum of its proper divisors (2607856).

5215706 is a wasteful number, since it uses less digits than its factorization.

5215706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607855.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 5215706 is about 2283.7920220545. The cubic root of 5215706 is about 173.4220707698.

The spelling of 5215706 in words is "five million, two hundred fifteen thousand, seven hundred six".