53136545 has 24 divisors (see below), whose sum is σ = 80106432. Its totient is φ = 33121440.

The previous prime is 53136541. The next prime is 53136547. The reversal of 53136545 is 54563135.

53136545 = T₃₂₁ + T₃₂₂ + ... + T₇₀₅.

It is not a de Polignac number, because 53136545 - 2² = 53136541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53136541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2039 + ... + 10508.

It is an arithmetic number, because the mean of its divisors is an integer number (3337768).

Almost surely, 2^53136545 is an apocalyptic number.

53136545 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

53136545 is a deficient number, since it is larger than the sum of its proper divisors (26969887).

53136545 is a wasteful number, since it uses less digits than its factorization.

53136545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12581 (or 12570 counting only the distinct ones).

The product of its digits is 27000, while the sum is 32.

The square root of 53136545 is about 7289.4818059997. The cubic root of 53136545 is about 375.9508786931.

The spelling of 53136545 in words is "fifty-three million, one hundred thirty-six thousand, five hundred forty-five".