2451213533 has 4 divisors (see below), whose sum is σ = 2455347708. Its totient is φ = 2447079360.

The previous prime is 2451213529. The next prime is 2451213539. The reversal of 2451213533 is 3353121542.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3353121542 = 2 ⋅1676560771.

It can be written as a sum of positive squares in 2 ways, for example, as 1001279449 + 1449934084 = 31643^2 + 38078^2 .

It is a cyclic number.

It is not a de Polignac number, because 2451213533 - 2² = 2451213529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2451213496 and 2451213505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2451213539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2066198 + ... + 2067383.

It is an arithmetic number, because the mean of its divisors is an integer number (613836927).

Almost surely, 2^2451213533 is an apocalyptic number.

It is an amenable number.

2451213533 is a deficient number, since it is larger than the sum of its proper divisors (4134175).

2451213533 is an equidigital number, since it uses as much as digits as its factorization.

2451213533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4134174.

The product of its digits is 10800, while the sum is 29.

The square root of 2451213533 is about 49509.7316999396. The cubic root of 2451213533 is about 1348.3222932212.

The spelling of 2451213533 in words is "two billion, four hundred fifty-one million, two hundred thirteen thousand, five hundred thirty-three".