2051575 has 12 divisors (see below), whose sum is σ = 2566800. Its totient is φ = 1626560.

The previous prime is 2051537. The next prime is 2051587. The reversal of 2051575 is 5751502.

It is a happy number.

It is not a de Polignac number, because 2051575 - 2¹⁹ = 1527287 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

2051575 is a lucky number.

It is a zygodrome in base 6.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3126 + ... + 3724.

It is an arithmetic number, because the mean of its divisors is an integer number (213900).

2^2051575 is an apocalyptic number.

2051575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2051575 is a deficient number, since it is larger than the sum of its proper divisors (515225).

2051575 is a wasteful number, since it uses less digits than its factorization.

2051575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 741 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 2051575 is about 1432.3320145832. The cubic root of 2051575 is about 127.0659338955.

The spelling of 2051575 in words is "two million, fifty-one thousand, five hundred seventy-five".