155140635 has 32 divisors (see below), whose sum is σ = 278949888. Its totient is φ = 73054080.

The previous prime is 155140607. The next prime is 155140637. The reversal of 155140635 is 536041551.

155140635 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155140635 - 2⁸ = 155140379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155140637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12811 + ... + 21780.

It is an arithmetic number, because the mean of its divisors is an integer number (8717184).

Almost surely, 2^155140635 is an apocalyptic number.

155140635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155140635 is a deficient number, since it is larger than the sum of its proper divisors (123809253).

155140635 is a wasteful number, since it uses less digits than its factorization.

155140635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34635.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 155140635 is about 12455.5463549376. The cubic root of 155140635 is about 537.3309480981.

It can be divided in two parts, 1551406 and 35, that added together give a triangular number (1551441 = T₁₇₆₁).

The spelling of 155140635 in words is "one hundred fifty-five million, one hundred forty thousand, six hundred thirty-five".