151100661 has 4 divisors (see below), whose sum is σ = 201467552. Its totient is φ = 100733772.

The previous prime is 151100627. The next prime is 151100669. The reversal of 151100661 is 166001151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166001151 = 3 ⋅55333717.

It is not a de Polignac number, because 151100661 - 2¹⁹ = 150576373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151100669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25183441 + ... + 25183446.

It is an arithmetic number, because the mean of its divisors is an integer number (50366888).

Almost surely, 2^151100661 is an apocalyptic number.

It is an amenable number.

151100661 is a deficient number, since it is larger than the sum of its proper divisors (50366891).

151100661 is an equidigital number, since it uses as much as digits as its factorization.

151100661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50366890.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 151100661 is about 12292.3008830731. The cubic root of 151100661 is about 532.6257041945.

The spelling of 151100661 in words is "one hundred fifty-one million, one hundred thousand, six hundred sixty-one".