1974457 has 2 divisors, whose sum is σ = 1974458. Its totient is φ = 1974456.

The previous prime is 1974433. The next prime is 1974493. The reversal of 1974457 is 7544791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1585081 + 389376 = 1259^2 + 624^2 .

It is an emirp because it is prime and its reverse (7544791) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1974457 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 1 + 9² + 7⁴ + 4³ + 4⁷ + 5⁹ + 7⁴ .

It is not a weakly prime, because it can be changed into another prime (1914457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 987228 + 987229.

It is an arithmetic number, because the mean of its divisors is an integer number (987229).

2^1974457 is an apocalyptic number.

It is an amenable number.

1974457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1974457 is an equidigital number, since it uses as much as digits as its factorization.

1974457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 37.

The square root of 1974457 is about 1405.1537282447. The cubic root of 1974457 is about 125.4534358453.

The spelling of 1974457 in words is "one million, nine hundred seventy-four thousand, four hundred fifty-seven".