1051561275 has 24 divisors (see below), whose sum is σ = 1785574704. Its totient is φ = 545673600.

The previous prime is 1051561229. The next prime is 1051561283. The reversal of 1051561275 is 5721651501.

It is a happy number.

It is not a de Polignac number, because 1051561275 - 2⁸ = 1051561019 is a prime.

It is a super-2 number, since 2×1051561275² = 2211562230159251250, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186696 + ... + 192245.

It is an arithmetic number, because the mean of its divisors is an integer number (74398946).

Almost surely, 2^1051561275 is an apocalyptic number.

1051561275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1051561275 is a deficient number, since it is larger than the sum of its proper divisors (734013429).

1051561275 is a wasteful number, since it uses less digits than its factorization.

1051561275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378991 (or 378986 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 33.

The square root of 1051561275 is about 32427.7855395647. The cubic root of 1051561275 is about 1016.8998769254.

The spelling of 1051561275 in words is "one billion, fifty-one million, five hundred sixty-one thousand, two hundred seventy-five".