154790077 has 4 divisors (see below), whose sum is σ = 166697020. Its totient is φ = 142883136.

The previous prime is 154790063. The next prime is 154790087. The reversal of 154790077 is 770097451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 770097451 = 79 ⋅9748069.

It can be written as a sum of positive squares in 2 ways, for example, as 101485476 + 53304601 = 10074^2 + 7301^2 .

It is a cyclic number.

It is not a de Polignac number, because 154790077 - 2¹⁹ = 154265789 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 (154790057) 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, 5953452 + ... + 5953477.

It is an arithmetic number, because the mean of its divisors is an integer number (41674255).

Almost surely, 2^154790077 is an apocalyptic number.

It is an amenable number.

154790077 is a deficient number, since it is larger than the sum of its proper divisors (11906943).

154790077 is a wasteful number, since it uses less digits than its factorization.

154790077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11906942.

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 154790077 is about 12441.4660309788. The cubic root of 154790077 is about 536.9259226432.

The spelling of 154790077 in words is "one hundred fifty-four million, seven hundred ninety thousand, seventy-seven".