2156750 has 16 divisors (see below), whose sum is σ = 4037904. Its totient is φ = 862600.

The previous prime is 2156731. The next prime is 2156753. The reversal of 2156750 is 576512.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156753) 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, 4064 + ... + 4563.

It is an arithmetic number, because the mean of its divisors is an integer number (252369).

2^2156750 is an apocalyptic number.

2156750 is a deficient number, since it is larger than the sum of its proper divisors (1881154).

2156750 is an equidigital number, since it uses as much as digits as its factorization.

2156750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8644 (or 8634 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 2156750 is about 1468.5877569965. The cubic root of 2156750 is about 129.2012163330.

The spelling of 2156750 in words is "two million, one hundred fifty-six thousand, seven hundred fifty".