1451352220 has 36 divisors (see below), whose sum is σ = 3237683400. Its totient is φ = 546389248.

The previous prime is 1451352209. The next prime is 1451352229. The reversal of 1451352220 is 222531541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451352229) 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 11 ways as a sum of consecutive naturals, for example, 119770 + ... + 131329.

It is an arithmetic number, because the mean of its divisors is an integer number (89935650).

Almost surely, 2^1451352220 is an apocalyptic number.

1451352220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1451352220 is an abundant number, since it is smaller than the sum of its proper divisors (1786331180).

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

1451352220 is a wasteful number, since it uses less digits than its factorization.

1451352220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251142 (or 251123 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1451352220 is about 38096.6169101667. The cubic root of 1451352220 is about 1132.2029284464.

Adding to 1451352220 its reverse (222531541), we get a palindrome (1673883761).

The spelling of 1451352220 in words is "one billion, four hundred fifty-one million, three hundred fifty-two thousand, two hundred twenty".