1530373 has 4 divisors (see below), whose sum is σ = 1648108. Its totient is φ = 1412640.

The previous prime is 1530349. The next prime is 1530409. The reversal of 1530373 is 3730351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3730351 = 103 ⋅36217.

It can be written as a sum of positive squares in 2 ways, for example, as 452929 + 1077444 = 673^2 + 1038^2 .

It is a cyclic number.

It is not a de Polignac number, because 1530373 - 2¹⁷ = 1399301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1530313) 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, 58848 + ... + 58873.

It is an arithmetic number, because the mean of its divisors is an integer number (412027).

2^1530373 is an apocalyptic number.

1530373 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1530373 is a deficient number, since it is larger than the sum of its proper divisors (117735).

1530373 is a wasteful number, since it uses less digits than its factorization.

1530373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117734.

The product of its (nonzero) digits is 945, while the sum is 22.

The square root of 1530373 is about 1237.0824548105. The cubic root of 1530373 is about 115.2388984590.

Subtracting from 1530373 its sum of digits (22), we obtain a palindrome (1530351).

It can be divided in two parts, 15303 and 73, that added together give a square (15376 = 124²).

The spelling of 1530373 in words is "one million, five hundred thirty thousand, three hundred seventy-three".