1553424 has 20 divisors (see below), whose sum is σ = 4013136. Its totient is φ = 517792.

The previous prime is 1553423. The next prime is 1553429. The reversal of 1553424 is 4243551.

It is a super-2 number, since 2×1553424² = 4826252247552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 1553394 and 1553403.

It is not an unprimeable number, because it can be changed into a prime (1553423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16134 + ... + 16229.

2^1553424 is an apocalyptic number.

It is an amenable number.

1553424 is an abundant number, since it is smaller than the sum of its proper divisors (2459712).

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

1553424 is a wasteful number, since it uses less digits than its factorization.

1553424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32374 (or 32368 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 1553424 is about 1246.3643127112. The cubic root of 1553424 is about 115.8146067525.

Adding to 1553424 its reverse (4243551), we get a palindrome (5796975).

It can be divided in two parts, 15534 and 24, that multiplied together give a triangular number (372816 = T₈₆₃).

The spelling of 1553424 in words is "one million, five hundred fifty-three thousand, four hundred twenty-four".