1051355140 has 96 divisors (see below), whose sum is σ = 2574633600. Its totient is φ = 356382720.

The previous prime is 1051355099. The next prime is 1051355141. The reversal of 1051355140 is 415531501.

It is a happy number.

It is a super-2 number, since 2×1051355140² = 2210695260808839200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051355141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 406371 + ... + 408949.

It is an arithmetic number, because the mean of its divisors is an integer number (26819100).

Almost surely, 2^1051355140 is an apocalyptic number.

1051355140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1051355140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1287316800).

1051355140 is an abundant number, since it is smaller than the sum of its proper divisors (1523278460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1051355140 is a wasteful number, since it uses less digits than its factorization.

1051355140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725 (or 2723 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1051355140 is about 32424.6070138097. The cubic root of 1051355140 is about 1016.8334257796.

Adding to 1051355140 its reverse (415531501), we get a palindrome (1466886641).

The spelling of 1051355140 in words is "one billion, fifty-one million, three hundred fifty-five thousand, one hundred forty".