405241601 has 4 divisors (see below), whose sum is σ = 407584212. Its totient is φ = 402898992.

The previous prime is 405241553. The next prime is 405241609. The reversal of 405241601 is 106142504.

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

It can be written as a sum of positive squares in 2 ways, for example, as 347785201 + 57456400 = 18649^2 + 7580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405241601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405241609) 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, 1171046 + ... + 1171391.

It is an arithmetic number, because the mean of its divisors is an integer number (101896053).

Almost surely, 2^405241601 is an apocalyptic number.

It is an amenable number.

405241601 is a deficient number, since it is larger than the sum of its proper divisors (2342611).

405241601 is a wasteful number, since it uses less digits than its factorization.

405241601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342610.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 405241601 is about 20130.6135276598. The cubic root of 405241601 is about 740.0107138697.

The spelling of 405241601 in words is "four hundred five million, two hundred forty-one thousand, six hundred one".