155243650 has 24 divisors (see below), whose sum is σ = 291739140. Its totient is φ = 61455360.

The previous prime is 155243639. The next prime is 155243651. The reversal of 155243650 is 56342551.

It can be written as a sum of positive squares in 6 ways, for example, as 8567329 + 146676321 = 2927^2 + 12111^2 .

It is not an unprimeable number, because it can be changed into a prime (155243651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11155 + ... + 20854.

Almost surely, 2^155243650 is an apocalyptic number.

155243650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155243650 is a deficient number, since it is larger than the sum of its proper divisors (136495490).

155243650 is a wasteful number, since it uses less digits than its factorization.

155243650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32118 (or 32113 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 155243650 is about 12459.6809750491. The cubic root of 155243650 is about 537.4498529022.

The spelling of 155243650 in words is "one hundred fifty-five million, two hundred forty-three thousand, six hundred fifty".