155022040 has 16 divisors (see below), whose sum is σ = 348799680. Its totient is φ = 62008800.

The previous prime is 155022037. The next prime is 155022053. The reversal of 155022040 is 40220551.

It is a junction number, because it is equal to n+sod(n) for n = 155021999 and 155022017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1937736 + ... + 1937815.

It is an arithmetic number, because the mean of its divisors is an integer number (21799980).

Almost surely, 2^155022040 is an apocalyptic number.

155022040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155022040 is an abundant number, since it is smaller than the sum of its proper divisors (193777640).

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

155022040 is a wasteful number, since it uses less digits than its factorization.

155022040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3875562 (or 3875558 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 155022040 is about 12450.7847142258. The cubic root of 155022040 is about 537.1939949212.

Adding to 155022040 its reverse (40220551), we get a palindrome (195242591).

The spelling of 155022040 in words is "one hundred fifty-five million, twenty-two thousand, forty".