5711220 has 36 divisors (see below), whose sum is σ = 17324580. Its totient is φ = 1522944.

The previous prime is 5711213. The next prime is 5711257. The reversal of 5711220 is 221175.

It can be written as a sum of positive squares in 2 ways, for example, as 4016016 + 1695204 = 2004^2 + 1302^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 5711193 and 5711202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15685 + ... + 16044.

Almost surely, 2^5711220 is an apocalyptic number.

It is an amenable number.

5711220 is an abundant number, since it is smaller than the sum of its proper divisors (11613360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5711220 is a wasteful number, since it uses less digits than its factorization.

5711220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31744 (or 31739 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 5711220 is about 2389.8158924905. The cubic root of 5711220 is about 178.7487293502.

Adding to 5711220 its reverse (221175), we get a palindrome (5932395).

The spelling of 5711220 in words is "five million, seven hundred eleven thousand, two hundred twenty".