1551128 has 8 divisors (see below), whose sum is σ = 2908380. Its totient is φ = 775560.

The previous prime is 1551113. The next prime is 1551133. The reversal of 1551128 is 8211551.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96938 + ... + 96953.

2^1551128 is an apocalyptic number.

It is an amenable number.

1551128 is a deficient number, since it is larger than the sum of its proper divisors (1357252).

1551128 is a wasteful number, since it uses less digits than its factorization.

1551128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193897 (or 193893 counting only the distinct ones).

The product of its digits is 400, while the sum is 23.

The square root of 1551128 is about 1245.4428931107. The cubic root of 1551128 is about 115.7575196442.

Adding to 1551128 its reverse (8211551), we get a palindrome (9762679).

The spelling of 1551128 in words is "one million, five hundred fifty-one thousand, one hundred twenty-eight".