2157074 has 4 divisors (see below), whose sum is σ = 3235614. Its totient is φ = 1078536.

The previous prime is 2157041. The next prime is 2157091. The reversal of 2157074 is 4707512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2122849 + 34225 = 1457^2 + 185^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539267 + ... + 539270.

2^2157074 is an apocalyptic number.

2157074 is a deficient number, since it is larger than the sum of its proper divisors (1078540).

2157074 is a wasteful number, since it uses less digits than its factorization.

2157074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078539.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 2157074 is about 1468.6980629115. The cubic root of 2157074 is about 129.2076858045.

The spelling of 2157074 in words is "two million, one hundred fifty-seven thousand, seventy-four".