405155401 has 8 divisors (see below), whose sum is σ = 464246784. Its totient is φ = 346367040.

The previous prime is 405155383. The next prime is 405155423. The reversal of 405155401 is 104551504.

It is a happy number.

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 405155401 - 2¹³ = 405147209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405152401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72880 + ... + 78241.

It is an arithmetic number, because the mean of its divisors is an integer number (58030848).

Almost surely, 2^405155401 is an apocalyptic number.

It is an amenable number.

405155401 is a deficient number, since it is larger than the sum of its proper divisors (59091383).

405155401 is a wasteful number, since it uses less digits than its factorization.

405155401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151511.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 405155401 is about 20128.4723960861. The cubic root of 405155401 is about 739.9582402780.

The spelling of 405155401 in words is "four hundred five million, one hundred fifty-five thousand, four hundred one".