155407043 has 4 divisors (see below), whose sum is σ = 169534968. Its totient is φ = 141279120.

The previous prime is 155407037. The next prime is 155407079. The reversal of 155407043 is 340704551.

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

It is a cyclic number.

It is not a de Polignac number, because 155407043 - 2²⁶ = 88298179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155406997 and 155407015.

It is not an unprimeable number, because it can be changed into a prime (155407243) 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, 7063946 + ... + 7063967.

It is an arithmetic number, because the mean of its divisors is an integer number (42383742).

Almost surely, 2^155407043 is an apocalyptic number.

155407043 is a deficient number, since it is larger than the sum of its proper divisors (14127925).

155407043 is a wasteful number, since it uses less digits than its factorization.

155407043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14127924.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 155407043 is about 12466.2361200163. The cubic root of 155407043 is about 537.6383410269.

The spelling of 155407043 in words is "one hundred fifty-five million, four hundred seven thousand, forty-three".