1501251 has 4 divisors (see below), whose sum is σ = 2001672. Its totient is φ = 1000832.

The previous prime is 1501229. The next prime is 1501261. The reversal of 1501251 is 1521051.

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

It is a cyclic number.

It is not a de Polignac number, because 1501251 - 2⁹ = 1500739 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 1501251.

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 3 ways as a sum of consecutive naturals, for example, 250206 + ... + 250211.

It is an arithmetic number, because the mean of its divisors is an integer number (500418).

2^1501251 is an apocalyptic number.

1501251 is a deficient number, since it is larger than the sum of its proper divisors (500421).

1501251 is an equidigital number, since it uses as much as digits as its factorization.

1501251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500420.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 1501251 is about 1225.2554835625. The cubic root of 1501251 is about 114.5032384686.

The spelling of 1501251 in words is "one million, five hundred one thousand, two hundred fifty-one".