801451421 has 4 divisors (see below), whose sum is σ = 804982272. Its totient is φ = 797920572.

The previous prime is 801451393. The next prime is 801451423. The reversal of 801451421 is 124154108.

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 a de Polignac number, because none of the positive numbers 2^k-801451421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801451423) 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, 1765085 + ... + 1765538.

It is an arithmetic number, because the mean of its divisors is an integer number (201245568).

Almost surely, 2^801451421 is an apocalyptic number.

It is an amenable number.

801451421 is a deficient number, since it is larger than the sum of its proper divisors (3530851).

801451421 is a wasteful number, since it uses less digits than its factorization.

801451421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530850.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 801451421 is about 28309.9173612358. The cubic root of 801451421 is about 928.8788358400.

The spelling of 801451421 in words is "eight hundred one million, four hundred fifty-one thousand, four hundred twenty-one".