2152145245 has 8 divisors (see below), whose sum is σ = 2671628760. Its totient is φ = 1662346560.

The previous prime is 2152145221. The next prime is 2152145267. The reversal of 2152145245 is 5425412512.

It can be written as a sum of positive squares in 4 ways, for example, as 872079961 + 1280065284 = 29531^2 + 35778^2 .

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

It is not a de Polignac number, because 2152145245 - 2¹⁵ = 2152112477 is a prime.

It is a super-2 number, since 2×2152145245² = 9263458311152220050, which contains 22 as substring.

It is a congruent 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, 7421046 + ... + 7421335.

It is an arithmetic number, because the mean of its divisors is an integer number (333953595).

Almost surely, 2^2152145245 is an apocalyptic number.

It is an amenable number.

2152145245 is a deficient number, since it is larger than the sum of its proper divisors (519483515).

2152145245 is a wasteful number, since it uses less digits than its factorization.

2152145245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14842415.

The product of its digits is 16000, while the sum is 31.

The square root of 2152145245 is about 46391.2194817080. The cubic root of 2152145245 is about 1291.0920074513.

Adding to 2152145245 its reverse (5425412512), we get a palindrome (7577557757).

It can be divided in two parts, 21521 and 45245, that added together give a palindrome (66766).

The spelling of 2152145245 in words is "two billion, one hundred fifty-two million, one hundred forty-five thousand, two hundred forty-five".