1545252101 has 8 divisors (see below), whose sum is σ = 1567324440. Its totient is φ = 1523204352.

The previous prime is 1545251989. The next prime is 1545252103. The reversal of 1545252101 is 1012525451.

It can be written as a sum of positive squares in 4 ways, for example, as 803779201 + 741472900 = 28351^2 + 27230^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1545252101 - 2²⁶ = 1478143237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1545252103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147431 + ... + 157563.

It is an arithmetic number, because the mean of its divisors is an integer number (195915555).

Almost surely, 2^1545252101 is an apocalyptic number.

It is an amenable number.

1545252101 is a deficient number, since it is larger than the sum of its proper divisors (22072339).

1545252101 is a wasteful number, since it uses less digits than its factorization.

1545252101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12295.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1545252101 is about 39309.6947456985. The cubic root of 1545252101 is about 1156.1116589841. Note that the first 3 decimals are identical.

Adding to 1545252101 its reverse (1012525451), we get a palindrome (2557777552).

The spelling of 1545252101 in words is "one billion, five hundred forty-five million, two hundred fifty-two thousand, one hundred one".