1561053 has 12 divisors (see below), whose sum is σ = 2254560. Its totient is φ = 960336.

The previous prime is 1561039. The next prime is 1561069. The reversal of 1561053 is 3501651.

It is a happy number.

It is not a de Polignac number, because 1561053 - 2⁴ = 1561037 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 (1561003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1033 + ... + 2046.

It is an arithmetic number, because the mean of its divisors is an integer number (187880).

2^1561053 is an apocalyptic number.

1561053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1561053 is a deficient number, since it is larger than the sum of its proper divisors (693507).

1561053 is a wasteful number, since it uses less digits than its factorization.

1561053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3108 (or 3095 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1561053 is about 1249.4210659341. The cubic root of 1561053 is about 116.0038890888.

The spelling of 1561053 in words is "one million, five hundred sixty-one thousand, fifty-three".