155001432 has 16 divisors (see below), whose sum is σ = 387503640. Its totient is φ = 51667136.

The previous prime is 155001419. The next prime is 155001479. The reversal of 155001432 is 234100551.

It is a junction number, because it is equal to n+sod(n) for n = 155001399 and 155001408.

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, 3229173 + ... + 3229220.

Almost surely, 2^155001432 is an apocalyptic number.

155001432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155001432 is an abundant number, since it is smaller than the sum of its proper divisors (232502208).

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

155001432 is a wasteful number, since it uses less digits than its factorization.

155001432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6458402 (or 6458398 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 155001432 is about 12449.9571083599. The cubic root of 155001432 is about 537.1701897374.

Adding to 155001432 its reverse (234100551), we get a palindrome (389101983).

The spelling of 155001432 in words is "one hundred fifty-five million, one thousand, four hundred thirty-two".