1551080 has 32 divisors (see below), whose sum is σ = 3696840. Its totient is φ = 583680.

The previous prime is 1551049. The next prime is 1551083. The reversal of 1551080 is 801551.

It can be written as a sum of positive squares in 4 ways, for example, as 1444804 + 106276 = 1202^2 + 326^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1551083) 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, 461 + ... + 1820.

2^1551080 is an apocalyptic number.

1551080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1551080 is an abundant number, since it is smaller than the sum of its proper divisors (2145760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1551080 is a wasteful number, since it uses less digits than its factorization.

1551080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309 (or 2305 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1551080 is about 1245.4236227084. The cubic root of 1551080 is about 115.7563255845.

The spelling of 1551080 in words is "one million, five hundred fifty-one thousand, eighty".