152755821 has 8 divisors (see below), whose sum is σ = 226304960. Its totient is φ = 101837196.

The previous prime is 152755807. The next prime is 152755831. The reversal of 152755821 is 128557251.

152755821 is a `hidden beast` number, since 1 + 5 + 2 + 75 + 582 + 1 = 666.

It is not a de Polignac number, because 152755821 - 2¹³ = 152747629 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 (152755831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2828785 + ... + 2828838.

It is an arithmetic number, because the mean of its divisors is an integer number (28288120).

Almost surely, 2^152755821 is an apocalyptic number.

It is an amenable number.

152755821 is a deficient number, since it is larger than the sum of its proper divisors (73549139).

152755821 is an equidigital number, since it uses as much as digits as its factorization.

152755821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5657632 (or 5657626 counting only the distinct ones).

The product of its digits is 28000, while the sum is 36.

The square root of 152755821 is about 12359.4425845181. The cubic root of 152755821 is about 534.5634439111.

The spelling of 152755821 in words is "one hundred fifty-two million, seven hundred fifty-five thousand, eight hundred twenty-one".