1513987 has 8 divisors (see below), whose sum is σ = 1566576. Its totient is φ = 1462272.

The previous prime is 1513973. The next prime is 1513991. The reversal of 1513987 is 7893151.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1513987 - 2⁷ = 1513859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1513927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5763 + ... + 6019.

It is an arithmetic number, because the mean of its divisors is an integer number (195822).

2^1513987 is an apocalyptic number.

1513987 is a deficient number, since it is larger than the sum of its proper divisors (52589).

1513987 is a wasteful number, since it uses less digits than its factorization.

1513987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437.

The product of its digits is 7560, while the sum is 34.

The square root of 1513987 is about 1230.4417905777. The cubic root of 1513987 is about 114.8261266601.

It can be divided in two parts, 1513 and 987, that added together give a square (2500 = 50²).

The spelling of 1513987 in words is "one million, five hundred thirteen thousand, nine hundred eighty-seven".