151631045 has 4 divisors (see below), whose sum is σ = 181957260. Its totient is φ = 121304832.

The previous prime is 151631023. The next prime is 151631047. The reversal of 151631045 is 540136151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540136151 = 61 ⋅8854691.

It can be written as a sum of positive squares in 2 ways, for example, as 63984001 + 87647044 = 7999^2 + 9362^2 .

It is a cyclic number.

It is not a de Polignac number, because 151631045 - 2⁶ = 151630981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151631047) 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, 15163100 + ... + 15163109.

It is an arithmetic number, because the mean of its divisors is an integer number (45489315).

Almost surely, 2^151631045 is an apocalyptic number.

It is an amenable number.

151631045 is a deficient number, since it is larger than the sum of its proper divisors (30326215).

151631045 is an equidigital number, since it uses as much as digits as its factorization.

151631045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30326214.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 151631045 is about 12313.8558136759. The cubic root of 151631045 is about 533.2481728176.

Adding to 151631045 its reverse (540136151), we get a palindrome (691767196).

The spelling of 151631045 in words is "one hundred fifty-one million, six hundred thirty-one thousand, forty-five".