2151403252 has 12 divisors (see below), whose sum is σ = 3790224900. Its totient is φ = 1068481856.

The previous prime is 2151403183. The next prime is 2151403277. The reversal of 2151403252 is 2523041512.

2151403252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1242139536 + 909263716 = 35244^2 + 30154^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1804273 + ... + 1805464.

It is an arithmetic number, because the mean of its divisors is an integer number (315852075).

Almost surely, 2^2151403252 is an apocalyptic number.

It is an amenable number.

2151403252 is a deficient number, since it is larger than the sum of its proper divisors (1638821648).

2151403252 is a wasteful number, since it uses less digits than its factorization.

2151403252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3609890 (or 3609888 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2151403252 is about 46383.2216647356. The cubic root of 2151403252 is about 1290.9436142222.

Adding to 2151403252 its reverse (2523041512), we get a palindrome (4674444764).

The spelling of 2151403252 in words is "two billion, one hundred fifty-one million, four hundred three thousand, two hundred fifty-two".