401555360 has 24 divisors (see below), whose sum is σ = 948674916. Its totient is φ = 160622080.

The previous prime is 401555347. The next prime is 401555377. The reversal of 401555360 is 63555104.

It can be written as a sum of positive squares in 2 ways, for example, as 360544144 + 41011216 = 18988^2 + 6404^2 .

It is a super-2 number, since 2×401555360² = 322493414289459200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1254701 + ... + 1255020.

Almost surely, 2^401555360 is an apocalyptic number.

401555360 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401555360 is an abundant number, since it is smaller than the sum of its proper divisors (547119556).

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

401555360 is a wasteful number, since it uses less digits than its factorization.

401555360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509736 (or 2509728 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 401555360 is about 20038.8462741746. The cubic root of 401555360 is about 737.7600637941.

The spelling of 401555360 in words is "four hundred one million, five hundred fifty-five thousand, three hundred sixty".