220535956 has 6 divisors (see below), whose sum is σ = 385937930. Its totient is φ = 110267976.

The previous prime is 220535941. The next prime is 220535969. The reversal of 220535956 is 659535022.

It can be written as a sum of positive squares in only one way, i.e., 220522500 + 13456 = 14850^2 + 116^2 .

It is a super-2 number, since 2×220535956² = 97272215777667872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27566991 + ... + 27566998.

Almost surely, 2^220535956 is an apocalyptic number.

It is an amenable number.

220535956 is a deficient number, since it is larger than the sum of its proper divisors (165401974).

220535956 is a wasteful number, since it uses less digits than its factorization.

220535956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55133993 (or 55133991 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 220535956 is about 14850.4530570619. The cubic root of 220535956 is about 604.1708980906.

The spelling of 220535956 in words is "two hundred twenty million, five hundred thirty-five thousand, nine hundred fifty-six".