151946506 has 4 divisors (see below), whose sum is σ = 227919762. Its totient is φ = 75973252.

The previous prime is 151946503. The next prime is 151946513. The reversal of 151946506 is 605649151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605649151 = 113 ⋅5359727.

It can be written as a sum of positive squares in only one way, i.e., 141967225 + 9979281 = 11915^2 + 3159^2 .

It is not an unprimeable number, because it can be changed into a prime (151946503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37986625 + ... + 37986628.

Almost surely, 2^151946506 is an apocalyptic number.

151946506 is a deficient number, since it is larger than the sum of its proper divisors (75973256).

151946506 is an equidigital number, since it uses as much as digits as its factorization.

151946506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75973255.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 151946506 is about 12326.6583468513. The cubic root of 151946506 is about 533.6177156100.

The spelling of 151946506 in words is "one hundred fifty-one million, nine hundred forty-six thousand, five hundred six".