158772037 has 4 divisors (see below), whose sum is σ = 167128480. Its totient is φ = 150415596.

The previous prime is 158772017. The next prime is 158772043. The reversal of 158772037 is 730277851.

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: 730277851 = 12889 ⋅56659.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158772037 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 (158772017) 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, 4178193 + ... + 4178230.

It is an arithmetic number, because the mean of its divisors is an integer number (41782120).

Almost surely, 2^158772037 is an apocalyptic number.

It is an amenable number.

158772037 is a deficient number, since it is larger than the sum of its proper divisors (8356443).

158772037 is an equidigital number, since it uses as much as digits as its factorization.

158772037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8356442.

The product of its (nonzero) digits is 82320, while the sum is 40.

The square root of 158772037 is about 12600.4776496766. The cubic root of 158772037 is about 541.4911199291.

The spelling of 158772037 in words is "one hundred fifty-eight million, seven hundred seventy-two thousand, thirty-seven".