1051320155 has 8 divisors (see below), whose sum is σ = 1292354784. Its totient is φ = 820542400.

The previous prime is 1051320139. The next prime is 1051320157. The reversal of 1051320155 is 5510231501.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1051320155 - 2⁴ = 1051320139 is a prime.

It is a super-2 number, since 2×1051320155² = 2210548136618448050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1051320155.

It is not an unprimeable number, because it can be changed into a prime (1051320157) 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, 2563991 + ... + 2564400.

It is an arithmetic number, because the mean of its divisors is an integer number (161544348).

Almost surely, 2^1051320155 is an apocalyptic number.

1051320155 is a deficient number, since it is larger than the sum of its proper divisors (241034629).

1051320155 is an equidigital number, since it uses as much as digits as its factorization.

1051320155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128437.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 1051320155 is about 32424.0675270701. The cubic root of 1051320155 is about 1016.8221469039.

Adding to 1051320155 its reverse (5510231501), we get a palindrome (6561551656).

The spelling of 1051320155 in words is "one billion, fifty-one million, three hundred twenty thousand, one hundred fifty-five".