400455501 has 4 divisors (see below), whose sum is σ = 533940672. Its totient is φ = 266970332.

The previous prime is 400455499. The next prime is 400455593. The reversal of 400455501 is 105554004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400455501 - 2¹ = 400455499 is a prime.

It is a super-2 number, since 2×400455501² = 320729216562322002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400455101) 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, 66742581 + ... + 66742586.

It is an arithmetic number, because the mean of its divisors is an integer number (133485168).

Almost surely, 2^400455501 is an apocalyptic number.

It is an amenable number.

400455501 is a deficient number, since it is larger than the sum of its proper divisors (133485171).

400455501 is a wasteful number, since it uses less digits than its factorization.

400455501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133485170.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 400455501 is about 20011.3842849514. The cubic root of 400455501 is about 737.0858736384.

The spelling of 400455501 in words is "four hundred million, four hundred fifty-five thousand, five hundred one".