1511151055 has 4 divisors (see below), whose sum is σ = 1813381272. Its totient is φ = 1208920840.

The previous prime is 1511150969. The next prime is 1511151067. The reversal of 1511151055 is 5501511151.

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

It is not a de Polignac number, because 1511151055 - 2¹¹ = 1511149007 is a prime.

It is a super-2 number, since 2×1511151055² = 4567155022055226050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151115101 + ... + 151115110.

It is an arithmetic number, because the mean of its divisors is an integer number (453345318).

Almost surely, 2^1511151055 is an apocalyptic number.

1511151055 is a deficient number, since it is larger than the sum of its proper divisors (302230217).

1511151055 is an equidigital number, since it uses as much as digits as its factorization.

1511151055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302230216.

The product of its (nonzero) digits is 625, while the sum is 25.

The square root of 1511151055 is about 38873.5264029391. The cubic root of 1511151055 is about 1147.5438581560.

It can be divided in two parts, 15111 and 51055, that added together give a palindrome (66166).

The spelling of 1511151055 in words is "one billion, five hundred eleven million, one hundred fifty-one thousand, fifty-five".