1621054112 has 12 divisors (see below), whose sum is σ = 3191450346. Its totient is φ = 810527040.

The previous prime is 1621054063. The next prime is 1621054117. The reversal of 1621054112 is 2114501261.

It can be written as a sum of positive squares in only one way, i.e., 1612504336 + 8549776 = 40156^2 + 2924^2 .

It is not an unprimeable number, because it can be changed into a prime (1621054117) 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 as a sum of consecutive naturals, namely, 25328939 + ... + 25329002.

Almost surely, 2^1621054112 is an apocalyptic number.

It is an amenable number.

1621054112 is a deficient number, since it is larger than the sum of its proper divisors (1570396234).

1621054112 is an equidigital number, since it uses as much as digits as its factorization.

1621054112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50657951 (or 50657943 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1621054112 is about 40262.3162771344. The cubic root of 1621054112 is about 1174.7149722407.

Adding to 1621054112 its reverse (2114501261), we get a palindrome (3735555373).

The spelling of 1621054112 in words is "one billion, six hundred twenty-one million, fifty-four thousand, one hundred twelve".