152722137 has 4 divisors (see below), whose sum is σ = 203629520. Its totient is φ = 101814756.

The previous prime is 152722127. The next prime is 152722147. The reversal of 152722137 is 731227251.

152722137 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (152722127) and next prime (152722147).

It is not a de Polignac number, because 152722137 - 2⁴ = 152722121 is a prime.

It is a super-4 number, since 4×152722137⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152722127) 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, 25453687 + ... + 25453692.

It is an arithmetic number, because the mean of its divisors is an integer number (50907380).

Almost surely, 2^152722137 is an apocalyptic number.

It is an amenable number.

152722137 is a deficient number, since it is larger than the sum of its proper divisors (50907383).

152722137 is an equidigital number, since it uses as much as digits as its factorization.

152722137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50907382.

The product of its digits is 5880, while the sum is 30.

The square root of 152722137 is about 12358.0798265750. The cubic root of 152722137 is about 534.5241490447.

Adding to 152722137 its reverse (731227251), we get a palindrome (883949388).

The spelling of 152722137 in words is "one hundred fifty-two million, seven hundred twenty-two thousand, one hundred thirty-seven".