1051655123 has 4 divisors (see below), whose sum is σ = 1059936000. Its totient is φ = 1043374248.

The previous prime is 1051655119. The next prime is 1051655161. The reversal of 1051655123 is 3215561501.

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

It is a cyclic number.

It is not a de Polignac number, because 1051655123 - 2² = 1051655119 is a prime.

It is a super-2 number, since 2×1051655123² = 2211956995464290258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051655113) 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, 4140248 + ... + 4140501.

It is an arithmetic number, because the mean of its divisors is an integer number (264984000).

Almost surely, 2^1051655123 is an apocalyptic number.

1051655123 is a deficient number, since it is larger than the sum of its proper divisors (8280877).

1051655123 is an equidigital number, since it uses as much as digits as its factorization.

1051655123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8280876.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1051655123 is about 32429.2325379433. The cubic root of 1051655123 is about 1016.9301275578.

The spelling of 1051655123 in words is "one billion, fifty-one million, six hundred fifty-five thousand, one hundred twenty-three".