2451215406 has 16 divisors (see below), whose sum is σ = 4909723344. Its totient is φ = 815856384.

The previous prime is 2451215383. The next prime is 2451215407. The reversal of 2451215406 is 6045121542.

It is a super-2 number, since 2×2451215406² = 12016913933223489672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2451215407) 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 7 ways as a sum of consecutive naturals, for example, 299481 + ... + 307556.

It is an arithmetic number, because the mean of its divisors is an integer number (306857709).

Almost surely, 2^2451215406 is an apocalyptic number.

2451215406 is an abundant number, since it is smaller than the sum of its proper divisors (2458507938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2451215406 is a wasteful number, since it uses less digits than its factorization.

2451215406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607715.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 2451215406 is about 49509.7506154091. The cubic root of 2451215406 is about 1348.3226366439.

Adding to 2451215406 its reverse (6045121542), we get a palindrome (8496336948).

The spelling of 2451215406 in words is "two billion, four hundred fifty-one million, two hundred fifteen thousand, four hundred six".