401252263 has 4 divisors (see below), whose sum is σ = 401800408. Its totient is φ = 400704120.

The previous prime is 401252261. The next prime is 401252303. The reversal of 401252263 is 362252104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401252263 - 2¹ = 401252261 is a prime.

It is a super-2 number, since 2×401252263² = 322006757125242338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401252261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272973 + ... + 274438.

It is an arithmetic number, because the mean of its divisors is an integer number (100450102).

Almost surely, 2^401252263 is an apocalyptic number.

401252263 is a deficient number, since it is larger than the sum of its proper divisors (548145).

401252263 is an equidigital number, since it uses as much as digits as its factorization.

401252263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548144.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 401252263 is about 20031.2821107387. The cubic root of 401252263 is about 737.5743947934.

The spelling of 401252263 in words is "four hundred one million, two hundred fifty-two thousand, two hundred sixty-three".