2138451 has 16 divisors (see below), whose sum is σ = 3302400. Its totient is φ = 1205568.

The previous prime is 2138429. The next prime is 2138467. The reversal of 2138451 is 1548312.

It is not a de Polignac number, because 2138451 - 2⁵ = 2138419 is a prime.

2138451 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2138401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1015 + ... + 2303.

It is an arithmetic number, because the mean of its divisors is an integer number (206400).

2^2138451 is an apocalyptic number.

2138451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2138451 is a deficient number, since it is larger than the sum of its proper divisors (1163949).

2138451 is a wasteful number, since it uses less digits than its factorization.

2138451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378.

The product of its digits is 960, while the sum is 24.

The square root of 2138451 is about 1462.3443506917. The cubic root of 2138451 is about 128.8347743444.

The spelling of 2138451 in words is "two million, one hundred thirty-eight thousand, four hundred fifty-one".