155245544 has 8 divisors (see below), whose sum is σ = 291085410. Its totient is φ = 77622768.

The previous prime is 155245537. The next prime is 155245553. The reversal of 155245544 is 445542551.

It can be written as a sum of positive squares in only one way, i.e., 135443044 + 19802500 = 11638^2 + 4450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9702839 + ... + 9702854.

Almost surely, 2^155245544 is an apocalyptic number.

It is an amenable number.

155245544 is a deficient number, since it is larger than the sum of its proper divisors (135839866).

155245544 is a wasteful number, since it uses less digits than its factorization.

155245544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19405699 (or 19405695 counting only the distinct ones).

The product of its digits is 80000, while the sum is 35.

The square root of 155245544 is about 12459.7569799736. The cubic root of 155245544 is about 537.4520385545.

The spelling of 155245544 in words is "one hundred fifty-five million, two hundred forty-five thousand, five hundred forty-four".