155207136 has 96 divisors (see below), whose sum is σ = 472324608. Its totient is φ = 43706880.

The previous prime is 155207131. The next prime is 155207137. The reversal of 155207136 is 631702551.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155207131) 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, 46086 + ... + 49338.

It is an arithmetic number, because the mean of its divisors is an integer number (4920048).

Almost surely, 2^155207136 is an apocalyptic number.

155207136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155207136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236162304).

155207136 is an abundant number, since it is smaller than the sum of its proper divisors (317117472).

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

155207136 is a wasteful number, since it uses less digits than its factorization.

155207136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3344 (or 3336 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 155207136 is about 12458.2156025652. The cubic root of 155207136 is about 537.4077127294.

Adding to 155207136 its reverse (631702551), we get a palindrome (786909687).

The spelling of 155207136 in words is "one hundred fifty-five million, two hundred seven thousand, one hundred thirty-six".