155880407 has 8 divisors (see below), whose sum is σ = 162912384. Its totient is φ = 148869688.

The previous prime is 155880343. The next prime is 155880443. The reversal of 155880407 is 704088551.

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 155880407 - 2⁶ = 155880343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155880457) 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, 10748 + ... + 20670.

It is an arithmetic number, because the mean of its divisors is an integer number (20364048).

Almost surely, 2^155880407 is an apocalyptic number.

155880407 is a deficient number, since it is larger than the sum of its proper divisors (7031977).

155880407 is an equidigital number, since it uses as much as digits as its factorization.

155880407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10629.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 155880407 is about 12485.2075273101. The cubic root of 155880407 is about 538.1836631037.

The spelling of 155880407 in words is "one hundred fifty-five million, eight hundred eighty thousand, four hundred seven".