151821056 has 18 divisors (see below), whose sum is σ = 303049572. Its totient is φ = 75910400.

The previous prime is 151821053. The next prime is 151821107. The reversal of 151821056 is 650128151.

It is not an unprimeable number, because it can be changed into a prime (151821053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 296270 + ... + 296781.

Almost surely, 2^151821056 is an apocalyptic number.

151821056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

151821056 is a deficient number, since it is larger than the sum of its proper divisors (151228516).

151821056 is an frugal number, since it uses more digits than its factorization.

151821056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593067 (or 593053 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 29.

The square root of 151821056 is about 12321.5687312939. The cubic root of 151821056 is about 533.4708201101.

The spelling of 151821056 in words is "one hundred fifty-one million, eight hundred twenty-one thousand, fifty-six".