1520255001 has 16 divisors (see below), whose sum is σ = 2091160064. Its totient is φ = 981673344.

The previous prime is 1520254963. The next prime is 1520255029. The reversal of 1520255001 is 1005520251.

It is not a de Polignac number, because 1520255001 - 2⁷ = 1520254873 is a prime.

It is a super-2 number, since 2×1520255001² = 4622350536131020002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1520255801) 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 15 ways as a sum of consecutive naturals, for example, 5956 + ... + 55461.

It is an arithmetic number, because the mean of its divisors is an integer number (130697504).

Almost surely, 2^1520255001 is an apocalyptic number.

It is an amenable number.

1520255001 is a deficient number, since it is larger than the sum of its proper divisors (570905063).

1520255001 is a wasteful number, since it uses less digits than its factorization.

1520255001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61680.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 1520255001 is about 38990.4475609091. The cubic root of 1520255001 is about 1149.8437093211.

Adding to 1520255001 its reverse (1005520251), we get a palindrome (2525775252).

The spelling of 1520255001 in words is "one billion, five hundred twenty million, two hundred fifty-five thousand, one".