401530655 has 8 divisors (see below), whose sum is σ = 481977600. Its totient is φ = 321130656.

The previous prime is 401530639. The next prime is 401530681. The reversal of 401530655 is 556035104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 401530655 - 2⁴ = 401530639 is a prime.

It is a super-2 number, since 2×401530655² = 322453733809458050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11141 + ... + 30449.

It is an arithmetic number, because the mean of its divisors is an integer number (60247200).

Almost surely, 2^401530655 is an apocalyptic number.

401530655 is a deficient number, since it is larger than the sum of its proper divisors (80446945).

401530655 is a wasteful number, since it uses less digits than its factorization.

401530655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23473.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 401530655 is about 20038.2298369891. The cubic root of 401530655 is about 737.7449336792.

Adding to 401530655 its reverse (556035104), we get a palindrome (957565759).

The spelling of 401530655 in words is "four hundred one million, five hundred thirty thousand, six hundred fifty-five".