1651125 has 64 divisors (see below), whose sum is σ = 3414528. Its totient is φ = 691200.

The previous prime is 1651093. The next prime is 1651151. The reversal of 1651125 is 5211561.

It is not a de Polignac number, because 1651125 - 2⁵ = 1651093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

1651125 is a lucky number.

It is a zygodrome in base 6.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44607 + ... + 44643.

It is an arithmetic number, because the mean of its divisors is an integer number (53352).

2^1651125 is an apocalyptic number.

1651125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1651125 is an abundant number, since it is smaller than the sum of its proper divisors (1763403).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1651125 is a wasteful number, since it uses less digits than its factorization.

1651125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 69 counting only the distinct ones).

The product of its digits is 300, while the sum is 21.

The square root of 1651125 is about 1284.9610889050. The cubic root of 1651125 is about 118.1934249852.

Adding to 1651125 its reverse (5211561), we get a palindrome (6862686).

The spelling of 1651125 in words is "one million, six hundred fifty-one thousand, one hundred twenty-five".