1151515255 has 24 divisors (see below), whose sum is σ = 1524843936. Its totient is φ = 834166080.

The previous prime is 1151515201. The next prime is 1151515301. The reversal of 1151515255 is 5525151511.

It is a happy number.

It is not a de Polignac number, because 1151515255 - 2¹⁷ = 1151384183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155497 + ... + 162733.

It is an arithmetic number, because the mean of its divisors is an integer number (63535164).

Almost surely, 2^1151515255 is an apocalyptic number.

1151515255 is a deficient number, since it is larger than the sum of its proper divisors (373328681).

1151515255 is a wasteful number, since it uses less digits than its factorization.

1151515255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7527 (or 7516 counting only the distinct ones).

The product of its digits is 6250, while the sum is 31.

The square root of 1151515255 is about 33933.9837773286. The cubic root of 1151515255 is about 1048.1495010266.

Adding to 1151515255 its reverse (5525151511), we get a palindrome (6676666766).

The spelling of 1151515255 in words is "one billion, one hundred fifty-one million, five hundred fifteen thousand, two hundred fifty-five".