1204521451 has 16 divisors (see below), whose sum is σ = 1463970240. Its totient is φ = 967449600.

The previous prime is 1204521443. The next prime is 1204521457. The reversal of 1204521451 is 1541254021.

It is not a de Polignac number, because 1204521451 - 2³ = 1204521443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1204521457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5151 + ... + 49351.

It is an arithmetic number, because the mean of its divisors is an integer number (91498140).

Almost surely, 2^1204521451 is an apocalyptic number.

1204521451 is a deficient number, since it is larger than the sum of its proper divisors (259448789).

1204521451 is a wasteful number, since it uses less digits than its factorization.

1204521451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44454.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1204521451 is about 34706.2163163892. The cubic root of 1204521451 is about 1063.9915515917.

Adding to 1204521451 its reverse (1541254021), we get a palindrome (2745775472).

The spelling of 1204521451 in words is "one billion, two hundred four million, five hundred twenty-one thousand, four hundred fifty-one".