401355215 has 16 divisors (see below), whose sum is σ = 504252000. Its totient is φ = 306268032.

The previous prime is 401355203. The next prime is 401355217. The reversal of 401355215 is 512553104.

It is a cyclic number.

It is not a de Polignac number, because 401355215 - 2⁶ = 401355151 is a prime.

It is a super-2 number, since 2×401355215² = 322172017215392450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401355217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4640 + ... + 28709.

It is an arithmetic number, because the mean of its divisors is an integer number (31515750).

Almost surely, 2^401355215 is an apocalyptic number.

401355215 is a deficient number, since it is larger than the sum of its proper divisors (102896785).

401355215 is a wasteful number, since it uses less digits than its factorization.

401355215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33466.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 401355215 is about 20033.8517265153. The cubic root of 401355215 is about 737.6374708785.

The spelling of 401355215 in words is "four hundred one million, three hundred fifty-five thousand, two hundred fifteen".