151961801 has 4 divisors (see below), whose sum is σ = 152021652. Its totient is φ = 151901952.

The previous prime is 151961749. The next prime is 151961809. The reversal of 151961801 is 108169151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123232201 + 28729600 = 11101^2 + 5360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151961801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151961809) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 25940 + ... + 31253.

It is an arithmetic number, because the mean of its divisors is an integer number (38005413).

Almost surely, 2^151961801 is an apocalyptic number.

It is an amenable number.

151961801 is a deficient number, since it is larger than the sum of its proper divisors (59851).

151961801 is an equidigital number, since it uses as much as digits as its factorization.

151961801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59850.

The product of its (nonzero) digits is 2160, while the sum is 32.

The square root of 151961801 is about 12327.2787345789. The cubic root of 151961801 is about 533.6356197381.

The spelling of 151961801 in words is "one hundred fifty-one million, nine hundred sixty-one thousand, eight hundred one".