151551616 has 16 divisors (see below), whose sum is σ = 301919490. Its totient is φ = 75775744.

The previous prime is 151551599. The next prime is 151551643. The reversal of 151551616 is 616155151.

It can be written as a sum of positive squares in only one way, i.e., 151191616 + 360000 = 12296^2 + 600^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×151551616² = 45935784624422912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 591871 + ... + 592126.

Almost surely, 2^151551616 is an apocalyptic number.

151551616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

151551616 is a deficient number, since it is larger than the sum of its proper divisors (150367874).

151551616 is an equidigital number, since it uses as much as digits as its factorization.

151551616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184011 (or 1183999 counting only the distinct ones).

The product of its digits is 4500, while the sum is 31.

The square root of 151551616 is about 12310.6302032024. The cubic root of 151551616 is about 533.1550459627.

The spelling of 151551616 in words is "one hundred fifty-one million, five hundred fifty-one thousand, six hundred sixteen".