1451505213 has 12 divisors (see below), whose sum is σ = 2099585020. Its totient is φ = 966301056.

The previous prime is 1451505179. The next prime is 1451505217. The reversal of 1451505213 is 3125051541.

1451505213 is a `hidden beast` number, since 145 + 1 + 505 + 2 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 250050969 + 1201454244 = 15813^2 + 34662^2 .

It is not a de Polignac number, because 1451505213 - 2⁹ = 1451504701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451505217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107356 + ... + 120117.

Almost surely, 2^1451505213 is an apocalyptic number.

It is an amenable number.

1451505213 is a deficient number, since it is larger than the sum of its proper divisors (648079807).

1451505213 is a wasteful number, since it uses less digits than its factorization.

1451505213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228188 (or 228185 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 1451505213 is about 38098.6248177018. The cubic root of 1451505213 is about 1132.2427104359.

Adding to 1451505213 its reverse (3125051541), we get a palindrome (4576556754).

The spelling of 1451505213 in words is "one billion, four hundred fifty-one million, five hundred five thousand, two hundred thirteen".