155343538 has 16 divisors (see below), whose sum is σ = 273501504. Its totient is φ = 64776240.

The previous prime is 155343533. The next prime is 155343553. The reversal of 155343538 is 835343551.

It is a super-2 number, since 2×155343538² = 48263229596714888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 155343497 and 155343506.

It is not an unprimeable number, because it can be changed into a prime (155343533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149428 + ... + 150463.

It is an arithmetic number, because the mean of its divisors is an integer number (17093844).

Almost surely, 2^155343538 is an apocalyptic number.

155343538 is a deficient number, since it is larger than the sum of its proper divisors (118157966).

155343538 is a wasteful number, since it uses less digits than its factorization.

155343538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299937.

The product of its digits is 108000, while the sum is 37.

The square root of 155343538 is about 12463.6887798115. The cubic root of 155343538 is about 537.5650981548.

The spelling of 155343538 in words is "one hundred fifty-five million, three hundred forty-three thousand, five hundred thirty-eight".