1528062997 has 4 divisors (see below), whose sum is σ = 1536505516. Its totient is φ = 1519620480.

The previous prime is 1528062979. The next prime is 1528063027. The reversal of 1528062997 is 7992608251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7992608251 = 257 ⋅31099643.

It can be written as a sum of positive squares in 2 ways, for example, as 208484721 + 1319578276 = 14439^2 + 36326^2 .

It is a cyclic number.

It is not a de Polignac number, because 1528062997 - 2⁷ = 1528062869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1528062997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1528062917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4220988 + ... + 4221349.

It is an arithmetic number, because the mean of its divisors is an integer number (384126379).

Almost surely, 2^1528062997 is an apocalyptic number.

It is an amenable number.

1528062997 is a deficient number, since it is larger than the sum of its proper divisors (8442519).

1528062997 is an equidigital number, since it uses as much as digits as its factorization.

1528062997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8442518.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 1528062997 is about 39090.4463648089. The cubic root of 1528062997 is about 1151.8088727436.

The spelling of 1528062997 in words is "one billion, five hundred twenty-eight million, sixty-two thousand, nine hundred ninety-seven".