155245320 has 48 divisors (see below), whose sum is σ = 504548460. Its totient is φ = 41398656.

The previous prime is 155245319. The next prime is 155245327. The reversal of 155245320 is 23542551.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 149964516 + 5280804 = 12246^2 + 2298^2 .

It is a super-2 number, since 2×155245320² = 48202218763804800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155245327) 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, 215259 + ... + 215978.

Almost surely, 2^155245320 is an apocalyptic number.

155245320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155245320 is an abundant number, since it is smaller than the sum of its proper divisors (349303140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155245320 is a wasteful number, since it uses less digits than its factorization.

155245320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431254 (or 431247 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 155245320 is about 12459.7479910310. The cubic root of 155245320 is about 537.4517800622.

Adding to 155245320 its reverse (23542551), we get a palindrome (178787871).

The spelling of 155245320 in words is "one hundred fifty-five million, two hundred forty-five thousand, three hundred twenty".