401401500 has 48 divisors (see below), whose sum is σ = 1168885536. Its totient is φ = 107040000.

The previous prime is 401401463. The next prime is 401401537. The reversal of 401401500 is 5104104.

401401500 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (401401463) and next prime (401401537).

It is a super-2 number, since 2×401401500² = 322246328404500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 401401500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132301 + ... + 135300.

It is an arithmetic number, because the mean of its divisors is an integer number (24351782).

Almost surely, 2^401401500 is an apocalyptic number.

It is an amenable number.

401401500 is an abundant number, since it is smaller than the sum of its proper divisors (767484036).

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

401401500 is a wasteful number, since it uses less digits than its factorization.

401401500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267623 (or 267611 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 401401500 is about 20035.0068629886. The cubic root of 401401500 is about 737.6658250120.

Adding to 401401500 its reverse (5104104), we get a palindrome (406505604).

The spelling of 401401500 in words is "four hundred one million, four hundred one thousand, five hundred".