155404473 has 32 divisors (see below), whose sum is σ = 244070400. Its totient is φ = 86106240.

The previous prime is 155404471. The next prime is 155404489. The reversal of 155404473 is 374404551.

It is not a de Polignac number, because 155404473 - 2¹ = 155404471 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155404471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170886 + ... + 171792.

It is an arithmetic number, because the mean of its divisors is an integer number (7627200).

Almost surely, 2^155404473 is an apocalyptic number.

It is an amenable number.

155404473 is a deficient number, since it is larger than the sum of its proper divisors (88665927).

155404473 is a wasteful number, since it uses less digits than its factorization.

155404473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 155404473 is about 12466.1330411640. The cubic root of 155404473 is about 537.6353773300.

The spelling of 155404473 in words is "one hundred fifty-five million, four hundred four thousand, four hundred seventy-three".