401555411 has 4 divisors (see below), whose sum is σ = 406393512. Its totient is φ = 396717312.

The previous prime is 401555377. The next prime is 401555417. The reversal of 401555411 is 114555104.

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

It is a cyclic number.

It is not a de Polignac number, because 401555411 - 2⁶ = 401555347 is a prime.

It is a super-2 number, since 2×401555411² = 322493496206757842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401555417) 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, 2418926 + ... + 2419091.

It is an arithmetic number, because the mean of its divisors is an integer number (101598378).

Almost surely, 2^401555411 is an apocalyptic number.

401555411 is a deficient number, since it is larger than the sum of its proper divisors (4838101).

401555411 is an equidigital number, since it uses as much as digits as its factorization.

401555411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4838100.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 401555411 is about 20038.8475467029. The cubic root of 401555411 is about 737.7600950274.

The spelling of 401555411 in words is "four hundred one million, five hundred fifty-five thousand, four hundred eleven".