2154722 has 8 divisors (see below), whose sum is σ = 3243996. Its totient is φ = 1073392.

The previous prime is 2154707. The next prime is 2154727. The reversal of 2154722 is 2274512.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1771561 + 383161 = 1331^2 + 619^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2154727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1253 + ... + 2424.

2^2154722 is an apocalyptic number.

2154722 is a deficient number, since it is larger than the sum of its proper divisors (1089274).

2154722 is a wasteful number, since it uses less digits than its factorization.

2154722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3972.

The product of its digits is 1120, while the sum is 23.

The square root of 2154722 is about 1467.8971353606. The cubic root of 2154722 is about 129.1607075063.

The spelling of 2154722 in words is "two million, one hundred fifty-four thousand, seven hundred twenty-two".