155435451 has 4 divisors (see below), whose sum is σ = 207247272. Its totient is φ = 103623632.

The previous prime is 155435443. The next prime is 155435461. The reversal of 155435451 is 154534551.

155435451 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 an emirpimes, since its reverse is a distinct semiprime: 154534551 = 3 ⋅51511517.

It is a cyclic number.

It is not a de Polignac number, because 155435451 - 2³ = 155435443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155435461) 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, 25905906 + ... + 25905911.

It is an arithmetic number, because the mean of its divisors is an integer number (51811818).

Almost surely, 2^155435451 is an apocalyptic number.

155435451 is a deficient number, since it is larger than the sum of its proper divisors (51811821).

155435451 is an equidigital number, since it uses as much as digits as its factorization.

155435451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51811820.

The product of its digits is 30000, while the sum is 33.

The square root of 155435451 is about 12467.3754655902. The cubic root of 155435451 is about 537.6710986574.

The spelling of 155435451 in words is "one hundred fifty-five million, four hundred thirty-five thousand, four hundred fifty-one".