155404983 has 8 divisors (see below), whose sum is σ = 211615488. Its totient is φ = 101398904.

The previous prime is 155404943. The next prime is 155404987. The reversal of 155404983 is 389404551.

155404983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 155404983 - 2⁸ = 155404727 is a prime.

It is a super-3 number, since 3×155404983³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155404987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550941 + ... + 551222.

It is an arithmetic number, because the mean of its divisors is an integer number (26451936).

Almost surely, 2^155404983 is an apocalyptic number.

155404983 is a deficient number, since it is larger than the sum of its proper divisors (56210505).

155404983 is a wasteful number, since it uses less digits than its factorization.

155404983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102213.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 155404983 is about 12466.1534965682. The cubic root of 155404983 is about 537.6359654592.

The spelling of 155404983 in words is "one hundred fifty-five million, four hundred four thousand, nine hundred eighty-three".