400011051 has 8 divisors (see below), whose sum is σ = 581834304. Its totient is φ = 242430920.

The previous prime is 400011043. The next prime is 400011097. The reversal of 400011051 is 150110004.

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 400011051 - 2³ = 400011043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400011041) 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, 6060741 + ... + 6060806.

It is an arithmetic number, because the mean of its divisors is an integer number (72729288).

Almost surely, 2^400011051 is an apocalyptic number.

400011051 is a deficient number, since it is larger than the sum of its proper divisors (181823253).

400011051 is a wasteful number, since it uses less digits than its factorization.

400011051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12121561.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 400011051 is about 20000.2762730918. The cubic root of 400011051 is about 736.8130850376.

Adding to 400011051 its reverse (150110004), we get a palindrome (550121055).

It can be divided in two parts, 4000 and 11051, that added together give a palindrome (15051).

The spelling of 400011051 in words is "four hundred million, eleven thousand, fifty-one".