155112250 has 32 divisors (see below), whose sum is σ = 307459152. Its totient is φ = 58393600.

The previous prime is 155112241. The next prime is 155112259. The reversal of 155112250 is 52211551.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (155112241) and next prime (155112259).

It can be written as a sum of positive squares in 8 ways, for example, as 64272289 + 90839961 = 8017^2 + 9531^2 .

It is not an unprimeable number, because it can be changed into a prime (155112259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13999 + ... + 22498.

Almost surely, 2^155112250 is an apocalyptic number.

155112250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155112250 is a deficient number, since it is larger than the sum of its proper divisors (152346902).

155112250 is a wasteful number, since it uses less digits than its factorization.

155112250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36531 (or 36521 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 155112250 is about 12454.4068505891. The cubic root of 155112250 is about 537.2981755340.

The spelling of 155112250 in words is "one hundred fifty-five million, one hundred twelve thousand, two hundred fifty".