151640537 has 4 divisors (see below), whose sum is σ = 152230836. Its totient is φ = 151050240.

The previous prime is 151640519. The next prime is 151640549. The reversal of 151640537 is 735046151.

151640537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 116877721 + 34762816 = 10811^2 + 5896^2 .

It is a cyclic number.

It is not a de Polignac number, because 151640537 - 2²⁶ = 84531673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151640557) 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, 294764 + ... + 295277.

It is an arithmetic number, because the mean of its divisors is an integer number (38057709).

Almost surely, 2^151640537 is an apocalyptic number.

It is an amenable number.

151640537 is a deficient number, since it is larger than the sum of its proper divisors (590299).

151640537 is an equidigital number, since it uses as much as digits as its factorization.

151640537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590298.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 151640537 is about 12314.2412271321. The cubic root of 151640537 is about 533.2592995760.

Adding to 151640537 its reverse (735046151), we get a palindrome (886686688).

The spelling of 151640537 in words is "one hundred fifty-one million, six hundred forty thousand, five hundred thirty-seven".