155052437 has 2 divisors, whose sum is σ = 155052438. Its totient is φ = 155052436.

The previous prime is 155052433. The next prime is 155052467. The reversal of 155052437 is 734250551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153983281 + 1069156 = 12409^2 + 1034^2 .

It is a cyclic number.

It is not a de Polignac number, because 155052437 - 2² = 155052433 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155052433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77526218 + 77526219.

It is an arithmetic number, because the mean of its divisors is an integer number (77526219).

Almost surely, 2^155052437 is an apocalyptic number.

It is an amenable number.

155052437 is a deficient number, since it is larger than the sum of its proper divisors (1).

155052437 is an equidigital number, since it uses as much as digits as its factorization.

155052437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 155052437 is about 12452.0053405064. The cubic root of 155052437 is about 537.2291039476.

The spelling of 155052437 in words is "one hundred fifty-five million, fifty-two thousand, four hundred thirty-seven".