1251501 has 8 divisors (see below), whose sum is σ = 1722624. Its totient is φ = 807360.

The previous prime is 1251463. The next prime is 1251527. The reversal of 1251501 is 1051521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1251501 - 2¹³ = 1243309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251571) 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, 6636 + ... + 6821.

It is an arithmetic number, because the mean of its divisors is an integer number (215328).

2^1251501 is an apocalyptic number.

It is an amenable number.

1251501 is a deficient number, since it is larger than the sum of its proper divisors (471123).

1251501 is a wasteful number, since it uses less digits than its factorization.

1251501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13491.

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

The square root of 1251501 is about 1118.7050549631. The cubic root of 1251501 is about 107.7648346742.

The spelling of 1251501 in words is "one million, two hundred fifty-one thousand, five hundred one".