401381252 has 6 divisors (see below), whose sum is σ = 702417198. Its totient is φ = 200690624.

The previous prime is 401381179. The next prime is 401381263. The reversal of 401381252 is 252183104.

It can be written as a sum of positive squares in only one way, i.e., 308142916 + 93238336 = 17554^2 + 9656^2 .

It is a super-2 number, since 2×401381252² = 322213818914175008, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50172653 + ... + 50172660.

It is an arithmetic number, because the mean of its divisors is an integer number (117069533).

Almost surely, 2^401381252 is an apocalyptic number.

It is an amenable number.

401381252 is a deficient number, since it is larger than the sum of its proper divisors (301035946).

401381252 is a wasteful number, since it uses less digits than its factorization.

401381252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100345317 (or 100345315 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 401381252 is about 20034.5015410916. The cubic root of 401381252 is about 737.6534213806.

The spelling of 401381252 in words is "four hundred one million, three hundred eighty-one thousand, two hundred fifty-two".