1220555452 has 12 divisors (see below), whose sum is σ = 2136793960. Its totient is φ = 610042896.

The previous prime is 1220555449. The next prime is 1220555503. The reversal of 1220555452 is 2545550221.

It is a happy number.

It is a super-2 number, since 2×1220555452² = 2979511222813848608, 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 in 3 ways as a sum of consecutive naturals, for example, 46743 + ... + 68014.

Almost surely, 2^1220555452 is an apocalyptic number.

It is an amenable number.

1220555452 is a deficient number, since it is larger than the sum of its proper divisors (916238508).

1220555452 is a wasteful number, since it uses less digits than its factorization.

1220555452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117420 (or 117418 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 1220555452 is about 34936.4487605710. The cubic root of 1220555452 is about 1068.6918686529.

The spelling of 1220555452 in words is "one billion, two hundred twenty million, five hundred fifty-five thousand, four hundred fifty-two".