155997064 has 16 divisors (see below), whose sum is σ = 295782300. Its totient is φ = 77121792.

The previous prime is 155997047. The next prime is 155997071. The reversal of 155997064 is 460799551.

It can be written as a sum of positive squares in 2 ways, for example, as 144720900 + 11276164 = 12030^2 + 3358^2 .

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108837 + ... + 110260.

Almost surely, 2^155997064 is an apocalyptic number.

It is an amenable number.

155997064 is a deficient number, since it is larger than the sum of its proper divisors (139785236).

155997064 is a wasteful number, since it uses less digits than its factorization.

155997064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219192 (or 219188 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 155997064 is about 12489.8784621789. The cubic root of 155997064 is about 538.3178840268.

The spelling of 155997064 in words is "one hundred fifty-five million, nine hundred ninety-seven thousand, sixty-four".