401512200251 has 4 divisors (see below), whose sum is σ = 401712657672. Its totient is φ = 401311742832.

The previous prime is 401512200239. The next prime is 401512200259. The reversal of 401512200251 is 152002215104.

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-401512200251 is a prime.

It is a super-2 number, since 2×401512200251² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401512200259) 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, 100225706 + ... + 100229711.

It is an arithmetic number, because the mean of its divisors is an integer number (100428164418).

Almost surely, 2^401512200251 is an apocalyptic number.

401512200251 is a deficient number, since it is larger than the sum of its proper divisors (200457421).

401512200251 is a wasteful number, since it uses less digits than its factorization.

401512200251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200457420.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 401512200251 its reverse (152002215104), we get a palindrome (553514415355).

The spelling of 401512200251 in words is "four hundred one billion, five hundred twelve million, two hundred thousand, two hundred fifty-one".