1515152997 has 12 divisors (see below), whose sum is σ = 2247704940. Its totient is φ = 982801728.

The previous prime is 1515152987. The next prime is 1515153047. The reversal of 1515152997 is 7992515151.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1149616836 + 365536161 = 33906^2 + 19119^2 .

It is not a de Polignac number, because 1515152997 - 2¹⁰ = 1515151973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1515152927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2274672 + ... + 2275337.

It is an arithmetic number, because the mean of its divisors is an integer number (187308745).

Almost surely, 2^1515152997 is an apocalyptic number.

It is an amenable number.

1515152997 is a deficient number, since it is larger than the sum of its proper divisors (732551943).

1515152997 is a wasteful number, since it uses less digits than its factorization.

1515152997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4550052 (or 4550049 counting only the distinct ones).

The product of its digits is 141750, while the sum is 45.

The square root of 1515152997 is about 38924.9662427599. The cubic root of 1515152997 is about 1148.5559687411. Note that the first 3 decimals are identical.

The spelling of 1515152997 in words is "one billion, five hundred fifteen million, one hundred fifty-two thousand, nine hundred ninety-seven".