155235845 has 4 divisors (see below), whose sum is σ = 186283020. Its totient is φ = 124188672.

The previous prime is 155235827. The next prime is 155235863. The reversal of 155235845 is 548532551.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (155235827) and next prime (155235863).

It can be written as a sum of positive squares in 2 ways, for example, as 49084036 + 106151809 = 7006^2 + 10303^2 .

It is a cyclic number.

It is not a de Polignac number, because 155235845 - 2⁸ = 155235589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155235799 and 155235808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15523580 + ... + 15523589.

It is an arithmetic number, because the mean of its divisors is an integer number (46570755).

Almost surely, 2^155235845 is an apocalyptic number.

It is an amenable number.

155235845 is a deficient number, since it is larger than the sum of its proper divisors (31047175).

155235845 is an equidigital number, since it uses as much as digits as its factorization.

155235845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31047174.

The product of its digits is 120000, while the sum is 38.

The square root of 155235845 is about 12459.3677608457. The cubic root of 155235845 is about 537.4408458427.

The spelling of 155235845 in words is "one hundred fifty-five million, two hundred thirty-five thousand, eight hundred forty-five".