1520474 has 4 divisors (see below), whose sum is σ = 2280714. Its totient is φ = 760236.

The previous prime is 1520473. The next prime is 1520483. The reversal of 1520474 is 4740251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4740251 = 331 ⋅14321.

It can be written as a sum of positive squares in only one way, i.e., 1117249 + 403225 = 1057^2 + 635^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1520473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380117 + ... + 380120.

2^1520474 is an apocalyptic number.

1520474 is a deficient number, since it is larger than the sum of its proper divisors (760240).

1520474 is an equidigital number, since it uses as much as digits as its factorization.

1520474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760239.

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

The square root of 1520474 is about 1233.0750179936. The cubic root of 1520474 is about 114.9898919912.

The spelling of 1520474 in words is "one million, five hundred twenty thousand, four hundred seventy-four".