1540053 has 10 divisors (see below), whose sum is σ = 2300694. Its totient is φ = 1026648.

The previous prime is 1540039. The next prime is 1540073. The reversal of 1540053 is 3500451.

It can be written as a sum of positive squares in only one way, i.e., 777924 + 762129 = 882^2 + 873^2 .

It is not a de Polignac number, because 1540053 - 2¹⁰ = 1539029 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9426 + ... + 9587.

2^1540053 is an apocalyptic number.

It is an amenable number.

1540053 is a deficient number, since it is larger than the sum of its proper divisors (760641).

1540053 is an equidigital number, since it uses as much as digits as its factorization.

1540053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19025 (or 19016 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1540053 is about 1240.9887187239. The cubic root of 1540053 is about 115.4813597849.

The spelling of 1540053 in words is "one million, five hundred forty thousand, fifty-three".