1421531552 has 36 divisors (see below), whose sum is σ = 3255564690. Its totient is φ = 609227136.

The previous prime is 1421531549. The next prime is 1421531593. The reversal of 1421531552 is 2551351241.

It can be written as a sum of positive squares in only one way, i.e., 988725136 + 432806416 = 31444^2 + 20804^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 451727 + ... + 454862.

Almost surely, 2^1421531552 is an apocalyptic number.

It is an amenable number.

1421531552 is an abundant number, since it is smaller than the sum of its proper divisors (1834033138).

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

1421531552 is an equidigital number, since it uses as much as digits as its factorization.

1421531552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906613 (or 906598 counting only the distinct ones).

The product of its digits is 6000, while the sum is 29.

The square root of 1421531552 is about 37703.2034713232. The cubic root of 1421531552 is about 1124.3948157721.

Adding to 1421531552 its reverse (2551351241), we get a palindrome (3972882793).

The spelling of 1421531552 in words is "one billion, four hundred twenty-one million, five hundred thirty-one thousand, five hundred fifty-two".