1504861 has 2 divisors, whose sum is σ = 1504862. Its totient is φ = 1504860.

The previous prime is 1504859. The next prime is 1504879. The reversal of 1504861 is 1684051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1196836 + 308025 = 1094^2 + 555^2 .

It is a cyclic number.

It is not a de Polignac number, because 1504861 - 2¹ = 1504859 is a prime.

Together with 1504859, it forms a pair of twin primes.

1504861 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1504801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 752430 + 752431.

It is an arithmetic number, because the mean of its divisors is an integer number (752431).

2^1504861 is an apocalyptic number.

It is an amenable number.

1504861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1504861 is an equidigital number, since it uses as much as digits as its factorization.

1504861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1504861 is about 1226.7277611597. The cubic root of 1504861 is about 114.5949454972.

The spelling of 1504861 in words is "one million, five hundred four thousand, eight hundred sixty-one".