1513561 has 24 divisors (see below), whose sum is σ = 1969920. Its totient is φ = 1153152.

The previous prime is 1513553. The next prime is 1513573. The reversal of 1513561 is 1653151.

It is not a de Polignac number, because 1513561 - 2³ = 1513553 is a prime.

It is a Duffinian number.

1513561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1513511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19120 + ... + 19198.

It is an arithmetic number, because the mean of its divisors is an integer number (82080).

2^1513561 is an apocalyptic number.

It is an amenable number.

1513561 is a deficient number, since it is larger than the sum of its proper divisors (456359).

1513561 is a wasteful number, since it uses less digits than its factorization.

1513561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 126 counting only the distinct ones).

The product of its digits is 450, while the sum is 22.

The square root of 1513561 is about 1230.2686698441. The cubic root of 1513561 is about 114.8153558678.

The spelling of 1513561 in words is "one million, five hundred thirteen thousand, five hundred sixty-one".