155432465 has 4 divisors (see below), whose sum is σ = 186518964. Its totient is φ = 124345968.

The previous prime is 155432461. The next prime is 155432467. The reversal of 155432465 is 564234551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564234551 = 23 ⋅24531937.

It can be written as a sum of positive squares in 2 ways, for example, as 76720081 + 78712384 = 8759^2 + 8872^2 .

It is a cyclic number.

It is not a de Polignac number, because 155432465 - 2² = 155432461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155432461) 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, 15543242 + ... + 15543251.

It is an arithmetic number, because the mean of its divisors is an integer number (46629741).

Almost surely, 2^155432465 is an apocalyptic number.

It is an amenable number.

155432465 is a deficient number, since it is larger than the sum of its proper divisors (31086499).

155432465 is an equidigital number, since it uses as much as digits as its factorization.

155432465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31086498.

The product of its digits is 72000, while the sum is 35.

The square root of 155432465 is about 12467.2557124654. The cubic root of 155432465 is about 537.6676556501.

The spelling of 155432465 in words is "one hundred fifty-five million, four hundred thirty-two thousand, four hundred sixty-five".