155430506 has 16 divisors (see below), whose sum is σ = 290675520. Its totient is φ = 60557280.

The previous prime is 155430493. The next prime is 155430511. The reversal of 155430506 is 605034551.

155430506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504491 + ... + 504798.

It is an arithmetic number, because the mean of its divisors is an integer number (18167220).

Almost surely, 2^155430506 is an apocalyptic number.

155430506 is a deficient number, since it is larger than the sum of its proper divisors (135245014).

155430506 is a wasteful number, since it uses less digits than its factorization.

155430506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009309.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 155430506 is about 12467.1771464113. The cubic root of 155430506 is about 537.6653968012.

The spelling of 155430506 in words is "one hundred fifty-five million, four hundred thirty thousand, five hundred six".