401412251 has 4 divisors (see below), whose sum is σ = 403078104. Its totient is φ = 399746400.

The previous prime is 401412199. The next prime is 401412257. The reversal of 401412251 is 152214104.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401412251 is a prime.

It is a super-2 number, since 2×401412251² = 322263590505774002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401412257) 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, 832565 + ... + 833046.

It is an arithmetic number, because the mean of its divisors is an integer number (100769526).

Almost surely, 2^401412251 is an apocalyptic number.

401412251 is a deficient number, since it is larger than the sum of its proper divisors (1665853).

401412251 is a wasteful number, since it uses less digits than its factorization.

401412251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665852.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 401412251 is about 20035.2751665656. The cubic root of 401412251 is about 737.6724107493.

Adding to 401412251 its reverse (152214104), we get a palindrome (553626355).

The spelling of 401412251 in words is "four hundred one million, four hundred twelve thousand, two hundred fifty-one".