155400733 has 8 divisors (see below), whose sum is σ = 158367096. Its totient is φ = 152448000.

The previous prime is 155400731. The next prime is 155400761. The reversal of 155400733 is 337004551.

It can be written as a sum of positive squares in 4 ways, for example, as 25030009 + 130370724 = 5003^2 + 11418^2 .

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 155400733 - 2¹ = 155400731 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 (155400731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21285 + ... + 27637.

It is an arithmetic number, because the mean of its divisors is an integer number (19795887).

Almost surely, 2^155400733 is an apocalyptic number.

It is an amenable number.

155400733 is a deficient number, since it is larger than the sum of its proper divisors (2966363).

155400733 is an equidigital number, since it uses as much as digits as its factorization.

155400733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6815.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 155400733 is about 12465.9830338405. The cubic root of 155400733 is about 537.6310643429.

The spelling of 155400733 in words is "one hundred fifty-five million, four hundred thousand, seven hundred thirty-three".