2457722 has 4 divisors (see below), whose sum is σ = 3686586. Its totient is φ = 1228860.

The previous prime is 2457709. The next prime is 2457727. The reversal of 2457722 is 2277542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2277542 = 2 ⋅1138771.

It can be written as a sum of positive squares in only one way, i.e., 1394761 + 1062961 = 1181^2 + 1031^2 .

It is not an unprimeable number, because it can be changed into a prime (2457727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614429 + ... + 614432.

2^2457722 is an apocalyptic number.

2457722 is a deficient number, since it is larger than the sum of its proper divisors (1228864).

2457722 is a wasteful number, since it uses less digits than its factorization.

2457722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228863.

The product of its digits is 7840, while the sum is 29.

The square root of 2457722 is about 1567.7123460635. The cubic root of 2457722 is about 134.9514594579.

The spelling of 2457722 in words is "two million, four hundred fifty-seven thousand, seven hundred twenty-two".