151630081 has 4 divisors (see below), whose sum is σ = 151665732. Its totient is φ = 151594432.

The previous prime is 151630069. The next prime is 151630103. The reversal of 151630081 is 180036151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180036151 = 223 ⋅807337.

It can be written as a sum of positive squares in 2 ways, for example, as 105267600 + 46362481 = 10260^2 + 6809^2 .

It is a cyclic number.

It is not a de Polignac number, because 151630081 - 2⁵ = 151630049 is a prime.

It is a super-2 number, since 2×151630081² = 45983362928133122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151630681) 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, 10420 + ... + 20293.

It is an arithmetic number, because the mean of its divisors is an integer number (37916433).

Almost surely, 2^151630081 is an apocalyptic number.

It is an amenable number.

151630081 is a deficient number, since it is larger than the sum of its proper divisors (35651).

151630081 is an equidigital number, since it uses as much as digits as its factorization.

151630081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35650.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 151630081 is about 12313.8166707159. The cubic root of 151630081 is about 533.2470427668.

The spelling of 151630081 in words is "one hundred fifty-one million, six hundred thirty thousand, eighty-one".