155757648 has 20 divisors (see below), whose sum is σ = 402374048. Its totient is φ = 51919200.

The previous prime is 155757643. The next prime is 155757673. The reversal of 155757648 is 846757551.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 3244951 = 155757648 / (1 + 5 + 5 + 7 + 5 + 7 + 6 + 4 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 155757597 and 155757606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155757643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1622428 + ... + 1622523.

Almost surely, 2^155757648 is an apocalyptic number.

It is an amenable number.

155757648 is an abundant number, since it is smaller than the sum of its proper divisors (246616400).

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

155757648 is a wasteful number, since it uses less digits than its factorization.

155757648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244962 (or 3244956 counting only the distinct ones).

The product of its digits is 1176000, while the sum is 48.

The square root of 155757648 is about 12480.2903812371. The cubic root of 155757648 is about 538.0423491306.

The spelling of 155757648 in words is "one hundred fifty-five million, seven hundred fifty-seven thousand, six hundred forty-eight".