152197861 has 4 divisors (see below), whose sum is σ = 152239500. Its totient is φ = 152156224.

The previous prime is 152197819. The next prime is 152197873. The reversal of 152197861 is 168791251.

It is a happy number.

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 69205761 + 82992100 = 8319^2 + 9110^2 .

It is a cyclic number.

It is not a de Polignac number, because 152197861 - 2¹³ = 152189669 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 (152197811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14746 + ... + 22843.

It is an arithmetic number, because the mean of its divisors is an integer number (38059875).

Almost surely, 2^152197861 is an apocalyptic number.

It is an amenable number.

152197861 is a deficient number, since it is larger than the sum of its proper divisors (41639).

152197861 is an equidigital number, since it uses as much as digits as its factorization.

152197861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41638.

The product of its digits is 30240, while the sum is 40.

The square root of 152197861 is about 12336.8497194381. The cubic root of 152197861 is about 533.9117962768.

The spelling of 152197861 in words is "one hundred fifty-two million, one hundred ninety-seven thousand, eight hundred sixty-one".