155601053 has 4 divisors (see below), whose sum is σ = 156018588. Its totient is φ = 155183520.

The previous prime is 155601029. The next prime is 155601073. The reversal of 155601053 is 350106551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350106551 = 17 ⋅20594503.

It can be written as a sum of positive squares in 2 ways, for example, as 97871449 + 57729604 = 9893^2 + 7598^2 .

It is a cyclic number.

It is not a de Polignac number, because 155601053 - 2¹² = 155596957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155601023) 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, 208208 + ... + 208953.

It is an arithmetic number, because the mean of its divisors is an integer number (39004647).

Almost surely, 2^155601053 is an apocalyptic number.

It is an amenable number.

155601053 is a deficient number, since it is larger than the sum of its proper divisors (417535).

155601053 is an equidigital number, since it uses as much as digits as its factorization.

155601053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417534.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 155601053 is about 12474.0151114226. The cubic root of 155601053 is about 537.8619770495.

The spelling of 155601053 in words is "one hundred fifty-five million, six hundred one thousand, fifty-three".