1504381 has 4 divisors (see below), whose sum is σ = 1592892. Its totient is φ = 1415872.

The previous prime is 1504379. The next prime is 1504409. The reversal of 1504381 is 1834051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 632025 + 872356 = 795^2 + 934^2 .

It is a cyclic number.

It is not a de Polignac number, because 1504381 - 2¹ = 1504379 is a prime.

It is a super-2 number, since 2×1504381² = 4526324386322, which contains 22 as substring.

It is a Duffinian number.

1504381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1504681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44230 + ... + 44263.

It is an arithmetic number, because the mean of its divisors is an integer number (398223).

2^1504381 is an apocalyptic number.

It is an amenable number.

1504381 is a deficient number, since it is larger than the sum of its proper divisors (88511).

1504381 is an equidigital number, since it uses as much as digits as its factorization.

1504381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88510.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1504381 is about 1226.5321031265. The cubic root of 1504381 is about 114.5827602249.

The spelling of 1504381 in words is "one million, five hundred four thousand, three hundred eighty-one".