155435040 has 72 divisors (see below), whose sum is σ = 530426988. Its totient is φ = 41448960.

The previous prime is 155434997. The next prime is 155435051. The reversal of 155435040 is 40534551.

155435040 is a `hidden beast` number, since 155 + 4 + 3 + 504 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 153660816 + 1774224 = 12396^2 + 1332^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 155434995 and 155435013.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52531 + ... + 55410.

Almost surely, 2^155435040 is an apocalyptic number.

155435040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155435040 is an abundant number, since it is smaller than the sum of its proper divisors (374991948).

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

155435040 is a wasteful number, since it uses less digits than its factorization.

155435040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107962 (or 107951 counting only the distinct ones).

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

The square root of 155435040 is about 12467.3589825592. The cubic root of 155435040 is about 537.6706247565.

Adding to 155435040 its reverse (40534551), we get a palindrome (195969591).

The spelling of 155435040 in words is "one hundred fifty-five million, four hundred thirty-five thousand, forty".