61377315 has 16 divisors (see below), whose sum is σ = 103372800. Its totient is φ = 31011552.

The previous prime is 61377313. The next prime is 61377319. The reversal of 61377315 is 51377316.

It is not a de Polignac number, because 61377315 - 2¹ = 61377313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61377313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107395 + ... + 107964.

It is an arithmetic number, because the mean of its divisors is an integer number (6460800).

Almost surely, 2^61377315 is an apocalyptic number.

61377315 is a deficient number, since it is larger than the sum of its proper divisors (41995485).

61377315 is a wasteful number, since it uses less digits than its factorization.

61377315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215386.

The product of its digits is 13230, while the sum is 33.

The square root of 61377315 is about 7834.3675558401. The cubic root of 61377315 is about 394.4596896104.

Subtracting from 61377315 its reverse (51377316), we obtain a palindrome (9999999).

The spelling of 61377315 in words is "sixty-one million, three hundred seventy-seven thousand, three hundred fifteen".