16452481 has 6 divisors (see below), whose sum is σ = 17477510. Its totient is φ = 15484416.

The previous prime is 16452479. The next prime is 16452487. The reversal of 16452481 is 18425461.

16452481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1890625 + 14561856 = 1375^2 + 3816^2 .

It is not a de Polignac number, because 16452481 - 2¹ = 16452479 is a prime.

It is a super-2 number, since 2×16452481² = 541368262110722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16452487) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28176 + ... + 28753.

Almost surely, 2^16452481 is an apocalyptic number.

It is an amenable number.

16452481 is a deficient number, since it is larger than the sum of its proper divisors (1025029).

16452481 is an equidigital number, since it uses as much as digits as its factorization.

16452481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56963 (or 56946 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 16452481 is about 4056.1658003588. The cubic root of 16452481 is about 254.3375397552.

The spelling of 16452481 in words is "sixteen million, four hundred fifty-two thousand, four hundred eighty-one".