401002544 has 10 divisors (see below), whose sum is σ = 776942460. Its totient is φ = 200501264.

The previous prime is 401002541. The next prime is 401002573. The reversal of 401002544 is 445200104.

It is not an unprimeable number, because it can be changed into a prime (401002541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12531314 + ... + 12531345.

It is an arithmetic number, because the mean of its divisors is an integer number (77694246).

Almost surely, 2^401002544 is an apocalyptic number.

It is an amenable number.

401002544 is a deficient number, since it is larger than the sum of its proper divisors (375939916).

401002544 is a wasteful number, since it uses less digits than its factorization.

401002544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25062667 (or 25062661 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 401002544 is about 20025.0479150488. The cubic root of 401002544 is about 737.4213534444.

Adding to 401002544 its reverse (445200104), we get a palindrome (846202648).

The spelling of 401002544 in words is "four hundred one million, two thousand, five hundred forty-four".