155740536 has 256 divisors, whose sum is σ = 537062400. Its totient is φ = 40808448.

The previous prime is 155740523. The next prime is 155740547. The reversal of 155740536 is 635047551.

155740536 is a `hidden beast` number, since 1 + 55 + 74 + 0 + 536 = 666.

It is a super-3 number, since 3×155740536³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 155740536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1876351 + ... + 1876433.

It is an arithmetic number, because the mean of its divisors is an integer number (2097900).

Almost surely, 2^155740536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155740536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268531200).

155740536 is an abundant number, since it is smaller than the sum of its proper divisors (381321864).

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

155740536 is a wasteful number, since it uses less digits than its factorization.

155740536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 155740536 is about 12479.6048014350. The cubic root of 155740536 is about 538.0226447630.

The spelling of 155740536 in words is "one hundred fifty-five million, seven hundred forty thousand, five hundred thirty-six".