1621050452 has 24 divisors (see below), whose sum is σ = 3243402624. Its totient is φ = 694456992.

The previous prime is 1621050437. The next prime is 1621050523. The reversal of 1621050452 is 2540501261.

It is a congruent number.

It is an unprimeable number.

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, 69233 + ... + 89639.

It is an arithmetic number, because the mean of its divisors is an integer number (135141776).

Almost surely, 2^1621050452 is an apocalyptic number.

It is an amenable number.

1621050452 is an abundant number, since it is smaller than the sum of its proper divisors (1622352172).

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

1621050452 is a wasteful number, since it uses less digits than its factorization.

1621050452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23255 (or 23253 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1621050452 is about 40262.2708251783. The cubic root of 1621050452 is about 1174.7140881534.

The spelling of 1621050452 in words is "one billion, six hundred twenty-one million, fifty thousand, four hundred fifty-two".