155201764 has 9 divisors (see below), whose sum is σ = 271646697. Its totient is φ = 77588424.

The previous prime is 155201759. The next prime is 155201777. The reversal of 155201764 is 467102551.

The square root of 155201764 is 12458.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 78464164 + 76737600 = 8858^2 + 8760^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 21802 + ... + 28030.

Almost surely, 2^155201764 is an apocalyptic number.

155201764 is the 12458-th square number.

It is an amenable number.

155201764 is a deficient number, since it is larger than the sum of its proper divisors (116444933).

155201764 is an frugal number, since it uses more digits than its factorization.

155201764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12462 (or 6231 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The cubic root of 155201764 is about 537.4015124399.

The spelling of 155201764 in words is "one hundred fifty-five million, two hundred one thousand, seven hundred sixty-four".