1520027745 has 8 divisors (see below), whose sum is σ = 2432044416. Its totient is φ = 810681456.

The previous prime is 1520027737. The next prime is 1520027767. The reversal of 1520027745 is 5477200251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1520027745 - 2³ = 1520027737 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50667577 + ... + 50667606.

It is an arithmetic number, because the mean of its divisors is an integer number (304005552).

Almost surely, 2^1520027745 is an apocalyptic number.

1520027745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1520027745 is a deficient number, since it is larger than the sum of its proper divisors (912016671).

1520027745 is a wasteful number, since it uses less digits than its factorization.

1520027745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101335191.

The product of its (nonzero) digits is 19600, while the sum is 33.

The square root of 1520027745 is about 38987.5331997294. The cubic root of 1520027745 is about 1149.7864114986.

Adding to 1520027745 its reverse (5477200251), we get a palindrome (6997227996).

The spelling of 1520027745 in words is "one billion, five hundred twenty million, twenty-seven thousand, seven hundred forty-five".