1515150971 has 2 divisors, whose sum is σ = 1515150972. Its totient is φ = 1515150970.

The previous prime is 1515150929. The next prime is 1515150997. The reversal of 1515150971 is 1790515151.

It is a strong prime.

It is an emirp because it is prime and its reverse (1790515151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1515150971 - 2¹⁰ = 1515149947 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1515150911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 757575485 + 757575486.

It is an arithmetic number, because the mean of its divisors is an integer number (757575486).

Almost surely, 2^1515150971 is an apocalyptic number.

1515150971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1515150971 is an equidigital number, since it uses as much as digits as its factorization.

1515150971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7875, while the sum is 35.

The square root of 1515150971 is about 38924.9402183228. The cubic root of 1515150971 is about 1148.5554568070. Note that the first 3 decimals are identical.

The spelling of 1515150971 in words is "one billion, five hundred fifteen million, one hundred fifty thousand, nine hundred seventy-one".