155104407 has 24 divisors (see below), whose sum is σ = 230836320. Its totient is φ = 100284480.

The previous prime is 155104403. The next prime is 155104427. The reversal of 155104407 is 704401551.

It is a happy number.

155104407 is a `hidden beast` number, since 155 + 104 + 407 = 666.

It is not a de Polignac number, because 155104407 - 2² = 155104403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155104403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145657 + ... + 146717.

It is an arithmetic number, because the mean of its divisors is an integer number (9618180).

Almost surely, 2^155104407 is an apocalyptic number.

155104407 is a deficient number, since it is larger than the sum of its proper divisors (75731913).

155104407 is a wasteful number, since it uses less digits than its factorization.

155104407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543 (or 1540 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 155104407 is about 12454.0919781412. The cubic root of 155104407 is about 537.2891195103.

Adding to 155104407 its reverse (704401551), we get a palindrome (859505958).

The spelling of 155104407 in words is "one hundred fifty-five million, one hundred four thousand, four hundred seven".