1551156044 has 12 divisors (see below), whose sum is σ = 2734053000. Its totient is φ = 769998048.

The previous prime is 1551156043. The next prime is 1551156053. The reversal of 1551156044 is 4406511551.

It is a self number, because there is not a number n which added to its sum of digits gives 1551156044.

It is not an unprimeable number, because it can be changed into a prime (1551156043) 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, 1394369 + ... + 1395480.

It is an arithmetic number, because the mean of its divisors is an integer number (227837750).

Almost surely, 2^1551156044 is an apocalyptic number.

It is an amenable number.

1551156044 is a deficient number, since it is larger than the sum of its proper divisors (1182896956).

1551156044 is a wasteful number, since it uses less digits than its factorization.

1551156044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789992 (or 2789990 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 1551156044 is about 39384.7184070167. The cubic root of 1551156044 is about 1157.5821726218.

Adding to 1551156044 its reverse (4406511551), we get a palindrome (5957667595).

The spelling of 1551156044 in words is "one billion, five hundred fifty-one million, one hundred fifty-six thousand, forty-four".