401136550 has 24 divisors (see below), whose sum is σ = 785385000. Its totient is φ = 152009280.

The previous prime is 401136517. The next prime is 401136563. The reversal of 401136550 is 55631104.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 210175 + ... + 212074.

It is an arithmetic number, because the mean of its divisors is an integer number (32724375).

Almost surely, 2^401136550 is an apocalyptic number.

401136550 is a deficient number, since it is larger than the sum of its proper divisors (384248450).

401136550 is a wasteful number, since it uses less digits than its factorization.

401136550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422280 (or 422275 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 401136550 is about 20028.3935950939. The cubic root of 401136550 is about 737.5034874871.

Adding to 401136550 its reverse (55631104), we get a palindrome (456767654).

The spelling of 401136550 in words is "four hundred one million, one hundred thirty-six thousand, five hundred fifty".