155071472 has 20 divisors (see below), whose sum is σ = 301770120. Its totient is φ = 77195328.

The previous prime is 155071463. The next prime is 155071489. The reversal of 155071472 is 274170551.

It is a super-2 number, since 2×155071472² = 48094322856493568, which contains 22 as substring.

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, 17498 + ... + 24825.

It is an arithmetic number, because the mean of its divisors is an integer number (15088506).

Almost surely, 2^155071472 is an apocalyptic number.

It is an amenable number.

155071472 is a deficient number, since it is larger than the sum of its proper divisors (146698648).

155071472 is a wasteful number, since it uses less digits than its factorization.

155071472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42560 (or 42554 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 155071472 is about 12452.7696517682. The cubic root of 155071472 is about 537.2510873440.

The spelling of 155071472 in words is "one hundred fifty-five million, seventy-one thousand, four hundred seventy-two".