155404069 has 8 divisors (see below), whose sum is σ = 161100000. Its totient is φ = 149730672.

The previous prime is 155404061. The next prime is 155404099. The reversal of 155404069 is 960404551.

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 155404069 - 2³ = 155404061 is a prime.

It is a super-2 number, since 2×155404069² = 48300849323513522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155404061) 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, 9102 + ... + 19840.

It is an arithmetic number, because the mean of its divisors is an integer number (20137500).

Almost surely, 2^155404069 is an apocalyptic number.

It is an amenable number.

155404069 is a deficient number, since it is larger than the sum of its proper divisors (5695931).

155404069 is a wasteful number, since it uses less digits than its factorization.

155404069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11267.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 155404069 is about 12466.1168372513. The cubic root of 155404069 is about 537.6349114384.

The spelling of 155404069 in words is "one hundred fifty-five million, four hundred four thousand, sixty-nine".