155406494 has 8 divisors (see below), whose sum is σ = 237508200. Its totient is φ = 76237096.

The previous prime is 155406481. The next prime is 155406497. The reversal of 155406494 is 494604551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155406497) 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, 732944 + ... + 733155.

It is an arithmetic number, because the mean of its divisors is an integer number (29688525).

Almost surely, 2^155406494 is an apocalyptic number.

155406494 is a deficient number, since it is larger than the sum of its proper divisors (82101706).

155406494 is a wasteful number, since it uses less digits than its factorization.

155406494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466154.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 155406494 is about 12466.2141005199. The cubic root of 155406494 is about 537.6377079287.

The spelling of 155406494 in words is "one hundred fifty-five million, four hundred six thousand, four hundred ninety-four".