13551480 has 48 divisors (see below), whose sum is σ = 44043480. Its totient is φ = 3613632.

The previous prime is 13551469. The next prime is 13551481. The reversal of 13551480 is 8415531.

13551480 is a `hidden beast` number, since 135 + 51 + 480 = 666.

It is a super-2 number, since 2×13551480² = 367285220380800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13551481) 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, 18462 + ... + 19181.

Almost surely, 2^13551480 is an apocalyptic number.

13551480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13551480 is an abundant number, since it is smaller than the sum of its proper divisors (30492000).

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

13551480 is a wasteful number, since it uses less digits than its factorization.

13551480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37660 (or 37653 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 13551480 is about 3681.2334889273. The cubic root of 13551480 is about 238.4124383553.

It can be divided in two parts, 135 and 51480, that added together give a palindrome (51615).

The spelling of 13551480 in words is "thirteen million, five hundred fifty-one thousand, four hundred eighty".