155253477 has 4 divisors (see below), whose sum is σ = 207004640. Its totient is φ = 103502316.

The previous prime is 155253467. The next prime is 155253481. The reversal of 155253477 is 774352551.

It is a happy number.

155253477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 155253477 - 2¹⁶ = 155187941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155253457) 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, 25875577 + ... + 25875582.

It is an arithmetic number, because the mean of its divisors is an integer number (51751160).

Almost surely, 2^155253477 is an apocalyptic number.

It is an amenable number.

155253477 is a deficient number, since it is larger than the sum of its proper divisors (51751163).

155253477 is an equidigital number, since it uses as much as digits as its factorization.

155253477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51751162.

The product of its digits is 147000, while the sum is 39.

The square root of 155253477 is about 12460.0753207996. The cubic root of 155253477 is about 537.4611929437.

The spelling of 155253477 in words is "one hundred fifty-five million, two hundred fifty-three thousand, four hundred seventy-seven".