1501281 has 8 divisors (see below), whose sum is σ = 2224160. Its totient is φ = 1000836.

The previous prime is 1501261. The next prime is 1501303. The reversal of 1501281 is 1821051.

It is not a de Polignac number, because 1501281 - 2⁶ = 1501217 is a prime.

It is a super-2 number, since 2×1501281² = 4507689281922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1501261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27775 + ... + 27828.

It is an arithmetic number, because the mean of its divisors is an integer number (278020).

2^1501281 is an apocalyptic number.

It is an amenable number.

1501281 is a deficient number, since it is larger than the sum of its proper divisors (722879).

1501281 is an equidigital number, since it uses as much as digits as its factorization.

1501281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55612 (or 55606 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1501281 is about 1225.2677258461. The cubic root of 1501281 is about 114.5040011823.

It can be divided in two parts, 150 and 1281, that added together give a triangular number (1431 = T₅₃).

The spelling of 1501281 in words is "one million, five hundred one thousand, two hundred eighty-one".