2156450 has 48 divisors (see below), whose sum is σ = 4419360. Its totient is φ = 779520.

The previous prime is 2156447. The next prime is 2156459. The reversal of 2156450 is 546512.

2156450 = T₅₉ + T₆₀ + ... + T₂₃₅.

It is not an unprimeable number, because it can be changed into a prime (2156459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36521 + ... + 36579.

It is an arithmetic number, because the mean of its divisors is an integer number (92070).

2^2156450 is an apocalyptic number.

2156450 is an abundant number, since it is smaller than the sum of its proper divisors (2262910).

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

2156450 is a wasteful number, since it uses less digits than its factorization.

2156450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2156450 is about 1468.4856145022. The cubic root of 2156450 is about 129.1952255039.

The spelling of 2156450 in words is "two million, one hundred fifty-six thousand, four hundred fifty".