1533345497 has 2 divisors, whose sum is σ = 1533345498. Its totient is φ = 1533345496.

The previous prime is 1533345487. The next prime is 1533345503. The reversal of 1533345497 is 7945433351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1402951936 + 130393561 = 37456^2 + 11419^2 .

It is an emirp because it is prime and its reverse (7945433351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1533345497 - 2⁶ = 1533345433 is a prime.

It is a super-2 number, since 2×1533345497² = 4702296826340354018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1533345427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 766672748 + 766672749.

It is an arithmetic number, because the mean of its divisors is an integer number (766672749).

Almost surely, 2^1533345497 is an apocalyptic number.

It is an amenable number.

1533345497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1533345497 is an equidigital number, since it uses as much as digits as its factorization.

1533345497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 44.

The square root of 1533345497 is about 39157.9557306047. The cubic root of 1533345497 is about 1153.1346105225.

The spelling of 1533345497 in words is "one billion, five hundred thirty-three million, three hundred forty-five thousand, four hundred ninety-seven".